/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:15:58,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:15:58,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:15:58,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:15:59,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:15:59,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:15:59,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:15:59,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:15:59,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:15:59,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:15:59,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:15:59,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:15:59,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:15:59,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:15:59,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:15:59,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:15:59,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:15:59,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:15:59,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:15:59,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:15:59,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:15:59,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:15:59,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:15:59,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:15:59,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:15:59,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:15:59,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:15:59,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:15:59,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:15:59,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:15:59,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:15:59,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:15:59,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:15:59,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:15:59,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:15:59,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:15:59,117 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:15:59,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:15:59,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:15:59,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:15:59,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:15:59,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:15:59,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:15:59,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:15:59,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:15:59,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:15:59,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:15:59,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:15:59,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:15:59,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-10-24 01:15:59,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0349cabe/546f93facff3427097844c494d8a0030/FLAG83e4e0e10 [2020-10-24 01:16:00,394 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:16:00,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label36.c [2020-10-24 01:16:00,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0349cabe/546f93facff3427097844c494d8a0030/FLAG83e4e0e10 [2020-10-24 01:16:00,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0349cabe/546f93facff3427097844c494d8a0030 [2020-10-24 01:16:00,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:16:00,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:16:00,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:16:00,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:16:00,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:16:00,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:16:00" (1/1) ... [2020-10-24 01:16:00,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aab51f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:00, skipping insertion in model container [2020-10-24 01:16:00,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:16:00" (1/1) ... [2020-10-24 01:16:00,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:16:00,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:16:01,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:16:01,183 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:16:01,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:16:01,332 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:16:01,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01 WrapperNode [2020-10-24 01:16:01,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:16:01,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:16:01,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:16:01,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:16:01,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (1/1) ... [2020-10-24 01:16:01,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:16:01,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:16:01,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:16:01,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:16:01,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (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 [2020-10-24 01:16:01,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:16:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:16:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:16:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:16:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:16:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:16:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:16:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:16:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:16:02,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:16:02,932 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:16:02,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:16:02 BoogieIcfgContainer [2020-10-24 01:16:02,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:16:02,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:16:02,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:16:02,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:16:02,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:16:00" (1/3) ... [2020-10-24 01:16:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524e89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:16:02, skipping insertion in model container [2020-10-24 01:16:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:16:01" (2/3) ... [2020-10-24 01:16:02,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524e89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:16:02, skipping insertion in model container [2020-10-24 01:16:02,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:16:02" (3/3) ... [2020-10-24 01:16:02,951 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label36.c [2020-10-24 01:16:02,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:16:02,974 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:16:02,988 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:16:03,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:16:03,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:16:03,024 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:16:03,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:16:03,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:16:03,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:16:03,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:16:03,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:16:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-10-24 01:16:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-24 01:16:03,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:03,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:03,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2084118926, now seen corresponding path program 1 times [2020-10-24 01:16:03,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:03,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615861679] [2020-10-24 01:16:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:16:03,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615861679] [2020-10-24 01:16:03,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:16:03,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 01:16:03,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439369213] [2020-10-24 01:16:03,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:16:03,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:03,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:16:03,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:16:03,876 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 5 states. [2020-10-24 01:16:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:07,556 INFO L93 Difference]: Finished difference Result 1373 states and 1909 transitions. [2020-10-24 01:16:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 01:16:07,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-24 01:16:07,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:07,584 INFO L225 Difference]: With dead ends: 1373 [2020-10-24 01:16:07,584 INFO L226 Difference]: Without dead ends: 790 [2020-10-24 01:16:07,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:16:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-10-24 01:16:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 755. [2020-10-24 01:16:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-10-24 01:16:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 923 transitions. [2020-10-24 01:16:07,853 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 923 transitions. Word has length 139 [2020-10-24 01:16:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:07,857 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 923 transitions. [2020-10-24 01:16:07,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:16:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 923 transitions. [2020-10-24 01:16:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-24 01:16:07,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:07,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:07,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:16:07,880 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:07,881 INFO L82 PathProgramCache]: Analyzing trace with hash -115759860, now seen corresponding path program 1 times [2020-10-24 01:16:07,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:07,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787203052] [2020-10-24 01:16:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:08,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:16:08,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787203052] [2020-10-24 01:16:08,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:08,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:16:08,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787185600] [2020-10-24 01:16:08,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:16:08,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:16:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:16:08,603 INFO L87 Difference]: Start difference. First operand 755 states and 923 transitions. Second operand 11 states. [2020-10-24 01:16:08,807 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:16:09,284 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:16:09,455 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:16:09,872 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-24 01:16:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:14,550 INFO L93 Difference]: Finished difference Result 2962 states and 3993 transitions. [2020-10-24 01:16:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:16:14,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 160 [2020-10-24 01:16:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:14,569 INFO L225 Difference]: With dead ends: 2962 [2020-10-24 01:16:14,569 INFO L226 Difference]: Without dead ends: 2130 [2020-10-24 01:16:14,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:16:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-10-24 01:16:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1776. [2020-10-24 01:16:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-10-24 01:16:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2135 transitions. [2020-10-24 01:16:14,936 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2135 transitions. Word has length 160 [2020-10-24 01:16:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:14,937 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2135 transitions. [2020-10-24 01:16:14,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:16:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2135 transitions. [2020-10-24 01:16:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-24 01:16:14,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:14,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:14,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:16:14,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1592089908, now seen corresponding path program 1 times [2020-10-24 01:16:14,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:14,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705844413] [2020-10-24 01:16:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:15,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:16:15,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705844413] [2020-10-24 01:16:15,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:15,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:16:15,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644933605] [2020-10-24 01:16:15,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:16:15,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:15,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:16:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:16:15,582 INFO L87 Difference]: Start difference. First operand 1776 states and 2135 transitions. Second operand 11 states. [2020-10-24 01:16:15,802 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:16:16,714 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:16:16,942 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:16:17,776 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:16:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:21,879 INFO L93 Difference]: Finished difference Result 2391 states and 2803 transitions. [2020-10-24 01:16:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:16:21,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-10-24 01:16:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:21,893 INFO L225 Difference]: With dead ends: 2391 [2020-10-24 01:16:21,894 INFO L226 Difference]: Without dead ends: 1991 [2020-10-24 01:16:21,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:16:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-10-24 01:16:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1768. [2020-10-24 01:16:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2020-10-24 01:16:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2104 transitions. [2020-10-24 01:16:22,248 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2104 transitions. Word has length 173 [2020-10-24 01:16:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:22,248 INFO L481 AbstractCegarLoop]: Abstraction has 1768 states and 2104 transitions. [2020-10-24 01:16:22,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:16:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2104 transitions. [2020-10-24 01:16:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-24 01:16:22,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:22,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:22,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:16:22,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:22,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1948868314, now seen corresponding path program 1 times [2020-10-24 01:16:22,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:22,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222981168] [2020-10-24 01:16:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 01:16:22,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222981168] [2020-10-24 01:16:22,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:22,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:16:22,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480493593] [2020-10-24 01:16:22,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:16:22,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:22,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:16:22,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:16:22,496 INFO L87 Difference]: Start difference. First operand 1768 states and 2104 transitions. Second operand 7 states. [2020-10-24 01:16:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:25,517 INFO L93 Difference]: Finished difference Result 4290 states and 5232 transitions. [2020-10-24 01:16:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:16:25,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-24 01:16:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:25,543 INFO L225 Difference]: With dead ends: 4290 [2020-10-24 01:16:25,544 INFO L226 Difference]: Without dead ends: 2554 [2020-10-24 01:16:25,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:16:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-10-24 01:16:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2220. [2020-10-24 01:16:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2020-10-24 01:16:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2607 transitions. [2020-10-24 01:16:26,141 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2607 transitions. Word has length 177 [2020-10-24 01:16:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:26,141 INFO L481 AbstractCegarLoop]: Abstraction has 2220 states and 2607 transitions. [2020-10-24 01:16:26,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:16:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2607 transitions. [2020-10-24 01:16:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-24 01:16:26,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:26,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:26,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:16:26,151 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash 835335994, now seen corresponding path program 1 times [2020-10-24 01:16:26,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:26,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520981426] [2020-10-24 01:16:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-24 01:16:26,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520981426] [2020-10-24 01:16:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:16:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577246545] [2020-10-24 01:16:26,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:16:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:16:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:16:26,809 INFO L87 Difference]: Start difference. First operand 2220 states and 2607 transitions. Second operand 11 states. [2020-10-24 01:16:27,030 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:16:27,185 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:16:27,728 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:16:28,375 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-24 01:16:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:33,333 INFO L93 Difference]: Finished difference Result 5467 states and 6554 transitions. [2020-10-24 01:16:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:16:33,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2020-10-24 01:16:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:33,358 INFO L225 Difference]: With dead ends: 5467 [2020-10-24 01:16:33,358 INFO L226 Difference]: Without dead ends: 3298 [2020-10-24 01:16:33,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:16:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2020-10-24 01:16:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2545. [2020-10-24 01:16:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2020-10-24 01:16:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 2968 transitions. [2020-10-24 01:16:33,945 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 2968 transitions. Word has length 188 [2020-10-24 01:16:33,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:33,946 INFO L481 AbstractCegarLoop]: Abstraction has 2545 states and 2968 transitions. [2020-10-24 01:16:33,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:16:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 2968 transitions. [2020-10-24 01:16:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-24 01:16:33,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:33,956 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:33,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:16:33,957 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1473813448, now seen corresponding path program 1 times [2020-10-24 01:16:33,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:33,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178793513] [2020-10-24 01:16:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:34,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:16:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 01:16:34,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178793513] [2020-10-24 01:16:34,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:34,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 01:16:34,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33295831] [2020-10-24 01:16:34,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 01:16:34,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 01:16:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:16:34,246 INFO L87 Difference]: Start difference. First operand 2545 states and 2968 transitions. Second operand 9 states. [2020-10-24 01:16:35,133 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:16:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:41,471 INFO L93 Difference]: Finished difference Result 8196 states and 9648 transitions. [2020-10-24 01:16:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 01:16:41,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2020-10-24 01:16:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:41,509 INFO L225 Difference]: With dead ends: 8196 [2020-10-24 01:16:41,509 INFO L226 Difference]: Without dead ends: 5824 [2020-10-24 01:16:41,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-24 01:16:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-24 01:16:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 4820. [2020-10-24 01:16:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4820 states. [2020-10-24 01:16:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 5599 transitions. [2020-10-24 01:16:42,691 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 5599 transitions. Word has length 206 [2020-10-24 01:16:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:42,691 INFO L481 AbstractCegarLoop]: Abstraction has 4820 states and 5599 transitions. [2020-10-24 01:16:42,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 01:16:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 5599 transitions. [2020-10-24 01:16:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-24 01:16:42,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:42,706 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:42,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:16:42,706 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:42,707 INFO L82 PathProgramCache]: Analyzing trace with hash -500283455, now seen corresponding path program 1 times [2020-10-24 01:16:42,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:42,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50398322] [2020-10-24 01:16:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:16:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 01:16:43,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50398322] [2020-10-24 01:16:43,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:43,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:16:43,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787512185] [2020-10-24 01:16:43,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:16:43,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:43,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:16:43,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:16:43,012 INFO L87 Difference]: Start difference. First operand 4820 states and 5599 transitions. Second operand 10 states. [2020-10-24 01:16:43,473 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:16:44,218 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:16:44,663 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:16:45,458 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:16:45,653 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:16:45,937 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-24 01:16:46,543 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:16:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:51,225 INFO L93 Difference]: Finished difference Result 11814 states and 13895 transitions. [2020-10-24 01:16:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 01:16:51,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 210 [2020-10-24 01:16:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:51,267 INFO L225 Difference]: With dead ends: 11814 [2020-10-24 01:16:51,268 INFO L226 Difference]: Without dead ends: 7167 [2020-10-24 01:16:51,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:16:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2020-10-24 01:16:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 5798. [2020-10-24 01:16:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5798 states. [2020-10-24 01:16:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 6730 transitions. [2020-10-24 01:16:52,721 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 6730 transitions. Word has length 210 [2020-10-24 01:16:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:52,722 INFO L481 AbstractCegarLoop]: Abstraction has 5798 states and 6730 transitions. [2020-10-24 01:16:52,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:16:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 6730 transitions. [2020-10-24 01:16:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-24 01:16:52,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:52,739 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:52,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:16:52,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:52,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1876623138, now seen corresponding path program 1 times [2020-10-24 01:16:52,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:52,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815538187] [2020-10-24 01:16:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:16:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 01:16:53,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815538187] [2020-10-24 01:16:53,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:53,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:16:53,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746942575] [2020-10-24 01:16:53,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:16:53,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:53,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:16:53,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:16:53,047 INFO L87 Difference]: Start difference. First operand 5798 states and 6730 transitions. Second operand 7 states. [2020-10-24 01:16:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:16:56,695 INFO L93 Difference]: Finished difference Result 12885 states and 15082 transitions. [2020-10-24 01:16:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:16:56,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-24 01:16:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:16:56,732 INFO L225 Difference]: With dead ends: 12885 [2020-10-24 01:16:56,733 INFO L226 Difference]: Without dead ends: 7260 [2020-10-24 01:16:56,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:16:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2020-10-24 01:16:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7156. [2020-10-24 01:16:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7156 states. [2020-10-24 01:16:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 8313 transitions. [2020-10-24 01:16:58,124 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 8313 transitions. Word has length 217 [2020-10-24 01:16:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:16:58,125 INFO L481 AbstractCegarLoop]: Abstraction has 7156 states and 8313 transitions. [2020-10-24 01:16:58,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:16:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 8313 transitions. [2020-10-24 01:16:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-24 01:16:58,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:16:58,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:16:58,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:16:58,142 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:16:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:16:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1698872824, now seen corresponding path program 1 times [2020-10-24 01:16:58,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:16:58,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373995180] [2020-10-24 01:16:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:16:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:16:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:16:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:16:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 01:16:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:16:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 77 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-24 01:16:58,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373995180] [2020-10-24 01:16:58,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:16:58,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:16:58,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381807620] [2020-10-24 01:16:58,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:16:58,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:16:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:16:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:16:58,463 INFO L87 Difference]: Start difference. First operand 7156 states and 8313 transitions. Second operand 8 states. [2020-10-24 01:16:59,245 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:16:59,903 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:17:00,371 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:17:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:03,579 INFO L93 Difference]: Finished difference Result 14516 states and 16891 transitions. [2020-10-24 01:17:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:17:03,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-24 01:17:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:03,617 INFO L225 Difference]: With dead ends: 14516 [2020-10-24 01:17:03,617 INFO L226 Difference]: Without dead ends: 7533 [2020-10-24 01:17:03,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:17:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7533 states. [2020-10-24 01:17:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7533 to 7021. [2020-10-24 01:17:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7021 states. [2020-10-24 01:17:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 8122 transitions. [2020-10-24 01:17:05,014 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 8122 transitions. Word has length 224 [2020-10-24 01:17:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:05,014 INFO L481 AbstractCegarLoop]: Abstraction has 7021 states and 8122 transitions. [2020-10-24 01:17:05,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:17:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 8122 transitions. [2020-10-24 01:17:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-24 01:17:05,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:17:05,029 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:17:05,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:17:05,030 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:17:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:17:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash 41473747, now seen corresponding path program 1 times [2020-10-24 01:17:05,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:17:05,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552182395] [2020-10-24 01:17:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:17:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:05,384 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-24 01:17:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:17:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:17:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:17:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:17:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-24 01:17:05,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552182395] [2020-10-24 01:17:05,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:17:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 01:17:05,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734326372] [2020-10-24 01:17:05,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 01:17:05,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:17:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 01:17:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:17:05,807 INFO L87 Difference]: Start difference. First operand 7021 states and 8122 transitions. Second operand 11 states. [2020-10-24 01:17:07,209 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-24 01:17:07,437 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:17:09,617 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:17:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:12,670 INFO L93 Difference]: Finished difference Result 14713 states and 17066 transitions. [2020-10-24 01:17:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 01:17:12,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-10-24 01:17:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:12,703 INFO L225 Difference]: With dead ends: 14713 [2020-10-24 01:17:12,703 INFO L226 Difference]: Without dead ends: 6599 [2020-10-24 01:17:12,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-10-24 01:17:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2020-10-24 01:17:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6432. [2020-10-24 01:17:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6432 states. [2020-10-24 01:17:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 7133 transitions. [2020-10-24 01:17:14,432 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 7133 transitions. Word has length 240 [2020-10-24 01:17:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:14,433 INFO L481 AbstractCegarLoop]: Abstraction has 6432 states and 7133 transitions. [2020-10-24 01:17:14,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 01:17:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 7133 transitions. [2020-10-24 01:17:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-24 01:17:14,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:17:14,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:17:14,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:17:14,443 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:17:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:17:14,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1517271380, now seen corresponding path program 1 times [2020-10-24 01:17:14,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:17:14,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993636474] [2020-10-24 01:17:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:17:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:17:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:17:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:17:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:17:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 89 proven. 24 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-24 01:17:15,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993636474] [2020-10-24 01:17:15,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:17:15,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 01:17:15,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412974645] [2020-10-24 01:17:15,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 01:17:15,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:17:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 01:17:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-24 01:17:15,183 INFO L87 Difference]: Start difference. First operand 6432 states and 7133 transitions. Second operand 14 states. [2020-10-24 01:17:15,650 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-10-24 01:17:16,649 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2020-10-24 01:17:17,710 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-24 01:17:18,467 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-24 01:17:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:22,383 INFO L93 Difference]: Finished difference Result 13195 states and 14631 transitions. [2020-10-24 01:17:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:17:22,383 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 257 [2020-10-24 01:17:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:22,413 INFO L225 Difference]: With dead ends: 13195 [2020-10-24 01:17:22,413 INFO L226 Difference]: Without dead ends: 6706 [2020-10-24 01:17:22,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2020-10-24 01:17:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6706 states. [2020-10-24 01:17:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6706 to 6405. [2020-10-24 01:17:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6405 states. [2020-10-24 01:17:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6405 states to 6405 states and 7086 transitions. [2020-10-24 01:17:23,831 INFO L78 Accepts]: Start accepts. Automaton has 6405 states and 7086 transitions. Word has length 257 [2020-10-24 01:17:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:23,831 INFO L481 AbstractCegarLoop]: Abstraction has 6405 states and 7086 transitions. [2020-10-24 01:17:23,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 01:17:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6405 states and 7086 transitions. [2020-10-24 01:17:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-24 01:17:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:17:23,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:17:23,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:17:23,841 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:17:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:17:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1382119098, now seen corresponding path program 1 times [2020-10-24 01:17:23,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:17:23,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13398771] [2020-10-24 01:17:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:17:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:17:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:17:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:17:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:17:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-24 01:17:24,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13398771] [2020-10-24 01:17:24,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:17:24,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:17:24,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547134781] [2020-10-24 01:17:24,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:17:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:17:24,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:17:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:17:24,217 INFO L87 Difference]: Start difference. First operand 6405 states and 7086 transitions. Second operand 10 states. [2020-10-24 01:17:24,520 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:17:25,575 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:17:26,130 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:17:26,372 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:17:29,071 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:17:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:31,015 INFO L93 Difference]: Finished difference Result 13086 states and 14487 transitions. [2020-10-24 01:17:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 01:17:31,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 260 [2020-10-24 01:17:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:31,049 INFO L225 Difference]: With dead ends: 13086 [2020-10-24 01:17:31,049 INFO L226 Difference]: Without dead ends: 6697 [2020-10-24 01:17:31,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 01:17:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2020-10-24 01:17:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 6036. [2020-10-24 01:17:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2020-10-24 01:17:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 6440 transitions. [2020-10-24 01:17:32,255 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 6440 transitions. Word has length 260 [2020-10-24 01:17:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 6036 states and 6440 transitions. [2020-10-24 01:17:32,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:17:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 6440 transitions. [2020-10-24 01:17:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-24 01:17:32,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:17:32,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:17:32,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:17:32,261 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:17:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:17:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash 718397992, now seen corresponding path program 1 times [2020-10-24 01:17:32,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:17:32,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200480434] [2020-10-24 01:17:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:17:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:17:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:17:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:32,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:17:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:32,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:17:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-24 01:17:32,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200480434] [2020-10-24 01:17:32,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:17:32,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:17:32,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628743244] [2020-10-24 01:17:32,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:17:32,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:17:32,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:17:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:17:32,648 INFO L87 Difference]: Start difference. First operand 6036 states and 6440 transitions. Second operand 8 states. [2020-10-24 01:17:34,062 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:17:35,067 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:17:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:36,540 INFO L93 Difference]: Finished difference Result 12000 states and 12804 transitions. [2020-10-24 01:17:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:17:36,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-10-24 01:17:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:36,561 INFO L225 Difference]: With dead ends: 12000 [2020-10-24 01:17:36,562 INFO L226 Difference]: Without dead ends: 6137 [2020-10-24 01:17:36,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:17:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2020-10-24 01:17:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 5768. [2020-10-24 01:17:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5768 states. [2020-10-24 01:17:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 6128 transitions. [2020-10-24 01:17:37,807 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 6128 transitions. Word has length 300 [2020-10-24 01:17:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:37,808 INFO L481 AbstractCegarLoop]: Abstraction has 5768 states and 6128 transitions. [2020-10-24 01:17:37,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:17:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 6128 transitions. [2020-10-24 01:17:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-24 01:17:37,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:17:37,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:17:37,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:17:37,813 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:17:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:17:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash 122295907, now seen corresponding path program 1 times [2020-10-24 01:17:37,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:17:37,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703881298] [2020-10-24 01:17:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:17:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:17:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:17:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:17:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:17:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:17:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:17:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-24 01:17:38,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703881298] [2020-10-24 01:17:38,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:17:38,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:17:38,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687228052] [2020-10-24 01:17:38,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:17:38,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:17:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:17:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:17:38,207 INFO L87 Difference]: Start difference. First operand 5768 states and 6128 transitions. Second operand 7 states. [2020-10-24 01:17:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:17:41,485 INFO L93 Difference]: Finished difference Result 11214 states and 11927 transitions. [2020-10-24 01:17:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 01:17:41,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-24 01:17:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:17:41,490 INFO L225 Difference]: With dead ends: 11214 [2020-10-24 01:17:41,490 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:17:41,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:17:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:17:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:17:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:17:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:17:41,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2020-10-24 01:17:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:17:41,509 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:17:41,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:17:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:17:41,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:17:41,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:17:41,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:17:52,957 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 120 [2020-10-24 01:17:53,103 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 120 [2020-10-24 01:19:56,435 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 144 [2020-10-24 01:20:48,793 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-10-24 01:20:48,932 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-10-24 01:20:49,075 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-10-24 01:20:49,228 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 117 [2020-10-24 01:20:49,345 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 118 [2020-10-24 01:20:49,451 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 118 [2020-10-24 01:20:51,268 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:20:54,542 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:20:57,791 WARN L193 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:21:00,995 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:21:02,195 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:21:03,650 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:21:05,112 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:21:08,323 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:21:09,572 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:21:12,788 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:21:14,201 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-10-24 01:21:15,680 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2020-10-24 01:21:16,884 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-10-24 01:21:18,199 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2020-10-24 01:21:19,331 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-10-24 01:21:21,375 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 221 DAG size of output: 78 [2020-10-24 01:21:24,855 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:21:26,727 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 233 DAG size of output: 82 [2020-10-24 01:21:28,365 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 217 DAG size of output: 78 [2020-10-24 01:21:31,851 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:21:35,292 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:21:36,468 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:21:37,686 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-10-24 01:21:39,009 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 170 DAG size of output: 76 [2020-10-24 01:21:40,311 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 215 DAG size of output: 73 [2020-10-24 01:21:41,443 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:21:44,928 WARN L193 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:21:46,214 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:21:47,492 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 168 DAG size of output: 75 [2020-10-24 01:21:48,936 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2020-10-24 01:21:50,105 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:21:51,520 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 176 DAG size of output: 75 [2020-10-24 01:21:55,023 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:21:56,544 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 215 DAG size of output: 76 [2020-10-24 01:22:00,055 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:22:01,294 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-10-24 01:22:02,662 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2020-10-24 01:22:04,001 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2020-10-24 01:22:07,519 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:22:08,818 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-10-24 01:22:10,012 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:22:11,201 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:22:12,600 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 171 DAG size of output: 73 [2020-10-24 01:22:14,917 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 185 DAG size of output: 89 [2020-10-24 01:22:16,198 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 171 DAG size of output: 70 [2020-10-24 01:22:17,486 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 166 DAG size of output: 71 [2020-10-24 01:22:20,995 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:22:22,359 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-10-24 01:22:23,943 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 217 DAG size of output: 76 [2020-10-24 01:22:25,352 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 175 DAG size of output: 72 [2020-10-24 01:22:26,673 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-10-24 01:22:27,736 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-10-24 01:22:29,420 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2020-10-24 01:22:30,576 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 161 DAG size of output: 67 [2020-10-24 01:22:32,047 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-10-24 01:22:33,373 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 175 DAG size of output: 76 [2020-10-24 01:22:34,766 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-10-24 01:22:38,299 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:22:39,622 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 169 DAG size of output: 75 [2020-10-24 01:22:40,237 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-24 01:22:41,782 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:22:42,968 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-10-24 01:22:44,139 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:22:47,669 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:22:48,949 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:22:52,290 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:22:55,673 WARN L193 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:22:59,083 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:23:00,744 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:23:02,083 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:23:03,728 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:23:07,337 WARN L193 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:23:11,139 WARN L193 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:23:12,371 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 163 DAG size of output: 69 [2020-10-24 01:23:14,879 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 183 DAG size of output: 85 [2020-10-24 01:23:18,665 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:23:20,147 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 162 DAG size of output: 72 [2020-10-24 01:23:21,731 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 224 DAG size of output: 76 [2020-10-24 01:23:23,208 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2020-10-24 01:23:24,515 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-10-24 01:23:26,624 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 220 DAG size of output: 78 [2020-10-24 01:23:28,431 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 215 DAG size of output: 77 [2020-10-24 01:23:30,632 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 244 DAG size of output: 80 [2020-10-24 01:23:31,834 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:23:33,476 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 223 DAG size of output: 77 [2020-10-24 01:23:34,714 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:23:38,433 WARN L193 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:23:39,986 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 167 DAG size of output: 79 [2020-10-24 01:23:41,205 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:23:42,454 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:23:44,033 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 167 DAG size of output: 77 [2020-10-24 01:23:45,441 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 176 DAG size of output: 74 [2020-10-24 01:23:46,794 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:23:48,048 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2020-10-24 01:23:51,560 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:23:55,238 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:23:56,842 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:24:00,294 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:24:03,803 WARN L193 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:24:07,330 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:24:08,589 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:24:10,120 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-10-24 01:24:12,402 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 179 DAG size of output: 78 [2020-10-24 01:24:16,035 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:24:17,508 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2020-10-24 01:24:18,743 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-10-24 01:24:20,225 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 172 DAG size of output: 77 [2020-10-24 01:24:22,816 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 243 DAG size of output: 82 [2020-10-24 01:24:24,787 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 220 DAG size of output: 77 [2020-10-24 01:24:26,207 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 166 DAG size of output: 72 [2020-10-24 01:24:28,184 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 207 DAG size of output: 79 [2020-10-24 01:24:29,499 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-10-24 01:24:30,587 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-10-24 01:24:32,037 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2020-10-24 01:24:35,830 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:24:37,362 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-10-24 01:24:41,125 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:24:43,226 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-10-24 01:24:44,557 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:24:46,176 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:24:49,766 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:24:51,510 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 219 DAG size of output: 76 [2020-10-24 01:24:53,783 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 172 DAG size of output: 79 [2020-10-24 01:24:57,716 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:24:59,323 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 173 DAG size of output: 76 [2020-10-24 01:25:00,652 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:25:02,000 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2020-10-24 01:25:03,539 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2020-10-24 01:25:04,849 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-10-24 01:25:06,333 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 165 DAG size of output: 77 [2020-10-24 01:25:10,184 WARN L193 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:25:11,590 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 213 DAG size of output: 75 [2020-10-24 01:25:13,087 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 168 DAG size of output: 73 [2020-10-24 01:25:15,133 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 172 DAG size of output: 78 [2020-10-24 01:25:16,431 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2020-10-24 01:25:17,873 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 166 DAG size of output: 70 [2020-10-24 01:25:19,271 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 213 DAG size of output: 74 [2020-10-24 01:25:20,890 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 170 DAG size of output: 75 [2020-10-24 01:25:22,175 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-10-24 01:25:23,636 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-10-24 01:25:25,335 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 197 DAG size of output: 85 [2020-10-24 01:25:27,243 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 239 DAG size of output: 84 [2020-10-24 01:25:28,613 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 168 DAG size of output: 74 [2020-10-24 01:25:30,091 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 174 DAG size of output: 73 [2020-10-24 01:25:31,555 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 168 DAG size of output: 73 [2020-10-24 01:25:33,972 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 200 DAG size of output: 81 [2020-10-24 01:25:35,267 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:25:36,640 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:25:37,313 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-24 01:25:40,842 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:25:44,439 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:25:45,115 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-24 01:25:45,795 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-24 01:25:47,126 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:25:48,672 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 173 DAG size of output: 75 [2020-10-24 01:25:52,463 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:25:53,792 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:25:55,270 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-10-24 01:25:56,728 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 172 DAG size of output: 73 [2020-10-24 01:26:00,340 WARN L193 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:26:04,141 WARN L193 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:26:05,780 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-10-24 01:26:07,164 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-10-24 01:26:10,798 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:26:12,208 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:26:13,544 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:26:14,894 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:26:18,517 WARN L193 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:26:19,901 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:26:21,564 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:26:25,188 WARN L193 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:26:26,841 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:26:30,437 WARN L193 SmtUtils]: Spent 3.59 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:26:32,101 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:26:33,388 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:26:34,726 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-10-24 01:26:36,046 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-10-24 01:26:39,915 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:26:41,541 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-10-24 01:26:45,439 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:26:46,895 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 167 DAG size of output: 74 [2020-10-24 01:26:48,413 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 171 DAG size of output: 77 [2020-10-24 01:26:49,756 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:26:53,458 WARN L193 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 292 DAG size of output: 91 [2020-10-24 01:26:57,397 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:26:58,718 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2020-10-24 01:27:00,266 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 172 DAG size of output: 75 [2020-10-24 01:27:03,907 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:27:05,575 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 208 DAG size of output: 77 [2020-10-24 01:27:06,333 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 64 [2020-10-24 01:27:07,842 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:27:09,475 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 215 DAG size of output: 74 [2020-10-24 01:27:10,845 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 168 DAG size of output: 74 [2020-10-24 01:27:12,405 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 168 DAG size of output: 72 [2020-10-24 01:27:16,277 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:27:20,187 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:27:21,772 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 172 DAG size of output: 76 [2020-10-24 01:27:23,262 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2020-10-24 01:27:24,593 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2020-10-24 01:27:25,976 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 167 DAG size of output: 75 [2020-10-24 01:27:27,317 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-10-24 01:27:28,644 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 164 DAG size of output: 71 [2020-10-24 01:27:30,298 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 217 DAG size of output: 74 [2020-10-24 01:27:31,705 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 164 DAG size of output: 68 [2020-10-24 01:27:33,244 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2020-10-24 01:27:34,704 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 165 DAG size of output: 77 [2020-10-24 01:27:36,042 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-10-24 01:27:37,612 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 176 DAG size of output: 75 [2020-10-24 01:27:41,561 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:27:43,363 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 192 DAG size of output: 86 [2020-10-24 01:27:45,757 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 180 DAG size of output: 79 [2020-10-24 01:27:47,214 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-10-24 01:27:48,778 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 171 DAG size of output: 72 [2020-10-24 01:27:52,705 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:27:54,622 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-10-24 01:27:58,584 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:28:00,149 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 174 DAG size of output: 76 [2020-10-24 01:28:02,045 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-10-24 01:28:03,553 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 169 DAG size of output: 73 [2020-10-24 01:28:07,468 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:28:08,891 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:28:11,947 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 278 DAG size of output: 84 [2020-10-24 01:28:13,311 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:28:14,839 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-10-24 01:28:16,703 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 226 DAG size of output: 75 [2020-10-24 01:28:18,065 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-10-24 01:28:22,019 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:28:23,340 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 161 DAG size of output: 69 [2020-10-24 01:28:27,253 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:28:28,846 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 175 DAG size of output: 75 [2020-10-24 01:28:30,301 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 167 DAG size of output: 76 [2020-10-24 01:28:32,129 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 223 DAG size of output: 77 [2020-10-24 01:28:33,495 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:28:37,162 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:28:38,548 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 211 DAG size of output: 75 [2020-10-24 01:28:40,010 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:28:41,447 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:28:45,193 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:28:46,638 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 210 DAG size of output: 80 [2020-10-24 01:28:50,355 WARN L193 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 290 DAG size of output: 92 [2020-10-24 01:28:54,293 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:28:55,642 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 163 DAG size of output: 71 [2020-10-24 01:28:59,636 WARN L193 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 293 DAG size of output: 93 [2020-10-24 01:29:01,173 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 166 DAG size of output: 73 [2020-10-24 01:29:02,555 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 164 DAG size of output: 71