/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/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:30:07,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:30:07,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:30:07,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 02:30:07,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 02:30:07,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 02:30:07,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 02:30:07,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 02:30:07,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 02:30:07,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 02:30:07,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 02:30:07,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 02:30:07,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:30:07,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:30:07,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:30:07,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:30:07,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:30:07,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:30:07,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:30:07,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:30:07,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:30:07,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:30:07,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:30:07,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:30:07,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:30:07,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:30:07,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:30:07,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:30:07,091 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 02:30:07,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:30:07,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:30:07,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:30:07,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:30:07,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:30:07,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:30:07,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:30:07,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:30:07,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:30:07,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:30:07,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:30:07,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:30:07,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:30:07,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:30:07,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:30:07,119 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:30:07,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:30:07,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:30:07,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:30:07,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:30:07,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:30:07,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:30:07,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:30:07,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:30:07,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:30:07,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:30:07,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:30:07,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:30:07,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-10-24 02:30:07,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c6d6cea/97a0d023ef5c413d8f7a510538c4b2ae/FLAGeb246b8be [2020-10-24 02:30:08,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:30:08,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-10-24 02:30:08,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c6d6cea/97a0d023ef5c413d8f7a510538c4b2ae/FLAGeb246b8be [2020-10-24 02:30:08,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c6d6cea/97a0d023ef5c413d8f7a510538c4b2ae [2020-10-24 02:30:08,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:30:08,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:30:08,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:30:08,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:30:08,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:30:08,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:08" (1/1) ... [2020-10-24 02:30:08,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb12977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:08, skipping insertion in model container [2020-10-24 02:30:08,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:08" (1/1) ... [2020-10-24 02:30:08,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:30:08,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:30:08,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:30:08,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:30:09,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:30:09,030 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:30:09,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09 WrapperNode [2020-10-24 02:30:09,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:30:09,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:30:09,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:30:09,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:30:09,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (1/1) ... [2020-10-24 02:30:09,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:30:09,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:30:09,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:30:09,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:30:09,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (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 02:30:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:30:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:30:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:30:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:30:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:30:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:30:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:30:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:30:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:30:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:30:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:30:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:30:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:30:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:30:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:30:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:30:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:30:09,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:30:09,404 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:30:09,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:09 BoogieIcfgContainer [2020-10-24 02:30:09,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:30:09,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:30:09,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:30:09,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:30:09,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:30:08" (1/3) ... [2020-10-24 02:30:09,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263f8370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:09, skipping insertion in model container [2020-10-24 02:30:09,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:09" (2/3) ... [2020-10-24 02:30:09,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263f8370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:09, skipping insertion in model container [2020-10-24 02:30:09,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:09" (3/3) ... [2020-10-24 02:30:09,435 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-10-24 02:30:09,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:30:09,458 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:30:09,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:30:09,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:30:09,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:30:09,506 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:30:09,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:30:09,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:30:09,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:30:09,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:30:09,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:30:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-24 02:30:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-24 02:30:09,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:09,561 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] [2020-10-24 02:30:09,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash -774165412, now seen corresponding path program 1 times [2020-10-24 02:30:09,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:09,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262018692] [2020-10-24 02:30:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:09,931 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 02:30:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262018692] [2020-10-24 02:30:09,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:30:09,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:30:09,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167817520] [2020-10-24 02:30:09,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:30:09,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:09,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:30:09,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:30:09,958 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2020-10-24 02:30:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:10,246 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-24 02:30:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:30:10,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-24 02:30:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:10,256 INFO L225 Difference]: With dead ends: 61 [2020-10-24 02:30:10,256 INFO L226 Difference]: Without dead ends: 34 [2020-10-24 02:30:10,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:30:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-24 02:30:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-24 02:30:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 02:30:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-24 02:30:10,310 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-10-24 02:30:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:10,311 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-24 02:30:10,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:30:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-24 02:30:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-24 02:30:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:10,312 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-24 02:30:10,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:30:10,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:10,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1660354641, now seen corresponding path program 1 times [2020-10-24 02:30:10,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:10,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988918159] [2020-10-24 02:30:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:30:10,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988918159] [2020-10-24 02:30:10,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:10,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 02:30:10,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948127009] [2020-10-24 02:30:10,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:30:10,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:10,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:30:10,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:30:10,446 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-10-24 02:30:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:10,778 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-24 02:30:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:30:10,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-24 02:30:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:10,781 INFO L225 Difference]: With dead ends: 47 [2020-10-24 02:30:10,781 INFO L226 Difference]: Without dead ends: 43 [2020-10-24 02:30:10,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:30:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-24 02:30:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-24 02:30:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-24 02:30:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-24 02:30:10,797 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-10-24 02:30:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:10,798 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-24 02:30:10,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:30:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-24 02:30:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-24 02:30:10,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:10,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:10,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:30:10,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash -796378692, now seen corresponding path program 2 times [2020-10-24 02:30:10,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:10,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245279481] [2020-10-24 02:30:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 02:30:10,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245279481] [2020-10-24 02:30:10,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:10,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:30:10,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913731136] [2020-10-24 02:30:10,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:30:10,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:30:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:30:10,944 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 10 states. [2020-10-24 02:30:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:11,361 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-10-24 02:30:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:30:11,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-24 02:30:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:11,363 INFO L225 Difference]: With dead ends: 56 [2020-10-24 02:30:11,363 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 02:30:11,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:30:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 02:30:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-24 02:30:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-24 02:30:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-24 02:30:11,379 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-10-24 02:30:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:11,380 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-24 02:30:11,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:30:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-24 02:30:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-24 02:30:11,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:11,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:11,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:30:11,382 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash 658832975, now seen corresponding path program 3 times [2020-10-24 02:30:11,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:11,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979674991] [2020-10-24 02:30:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:30:11,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979674991] [2020-10-24 02:30:11,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:11,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:30:11,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429691892] [2020-10-24 02:30:11,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:30:11,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:11,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:30:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:30:11,573 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 12 states. [2020-10-24 02:30:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:12,265 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-10-24 02:30:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:30:12,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-24 02:30:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:12,272 INFO L225 Difference]: With dead ends: 65 [2020-10-24 02:30:12,272 INFO L226 Difference]: Without dead ends: 61 [2020-10-24 02:30:12,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:30:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-24 02:30:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-24 02:30:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 02:30:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-10-24 02:30:12,298 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-10-24 02:30:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:12,299 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-10-24 02:30:12,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:30:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-10-24 02:30:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-24 02:30:12,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:12,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:12,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:30:12,301 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash 617656092, now seen corresponding path program 4 times [2020-10-24 02:30:12,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:12,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451569552] [2020-10-24 02:30:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-24 02:30:12,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451569552] [2020-10-24 02:30:12,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:12,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 02:30:12,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360271148] [2020-10-24 02:30:12,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 02:30:12,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:12,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 02:30:12,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:30:12,543 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 14 states. [2020-10-24 02:30:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:13,373 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-10-24 02:30:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:30:13,373 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-24 02:30:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:13,375 INFO L225 Difference]: With dead ends: 74 [2020-10-24 02:30:13,375 INFO L226 Difference]: Without dead ends: 70 [2020-10-24 02:30:13,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:30:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-24 02:30:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-24 02:30:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-24 02:30:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-10-24 02:30:13,401 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-10-24 02:30:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:13,402 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-10-24 02:30:13,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 02:30:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-10-24 02:30:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-24 02:30:13,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:13,404 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:13,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:30:13,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1346016495, now seen corresponding path program 5 times [2020-10-24 02:30:13,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:13,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151137604] [2020-10-24 02:30:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 02:30:13,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151137604] [2020-10-24 02:30:13,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:13,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 02:30:13,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211402614] [2020-10-24 02:30:13,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 02:30:13,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:13,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 02:30:13,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:30:13,627 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 16 states. [2020-10-24 02:30:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:14,622 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-10-24 02:30:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 02:30:14,625 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-24 02:30:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:14,629 INFO L225 Difference]: With dead ends: 83 [2020-10-24 02:30:14,629 INFO L226 Difference]: Without dead ends: 79 [2020-10-24 02:30:14,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 02:30:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-24 02:30:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-24 02:30:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-24 02:30:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-24 02:30:14,662 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-10-24 02:30:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:14,663 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-24 02:30:14,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 02:30:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-24 02:30:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-24 02:30:14,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:14,667 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:14,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:30:14,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:14,668 INFO L82 PathProgramCache]: Analyzing trace with hash -173372292, now seen corresponding path program 6 times [2020-10-24 02:30:14,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:14,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441923856] [2020-10-24 02:30:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:15,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-24 02:30:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441923856] [2020-10-24 02:30:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 02:30:15,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376089169] [2020-10-24 02:30:15,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 02:30:15,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 02:30:15,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-24 02:30:15,043 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 18 states. [2020-10-24 02:30:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:16,112 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-10-24 02:30:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 02:30:16,113 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-10-24 02:30:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:16,114 INFO L225 Difference]: With dead ends: 92 [2020-10-24 02:30:16,114 INFO L226 Difference]: Without dead ends: 88 [2020-10-24 02:30:16,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=1166, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:30:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-24 02:30:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-24 02:30:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-24 02:30:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-10-24 02:30:16,162 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-10-24 02:30:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:16,163 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-10-24 02:30:16,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 02:30:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-10-24 02:30:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-24 02:30:16,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:16,165 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:16,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:30:16,165 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1706279823, now seen corresponding path program 7 times [2020-10-24 02:30:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:16,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061671922] [2020-10-24 02:30:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-24 02:30:16,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061671922] [2020-10-24 02:30:16,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:16,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 02:30:16,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862665894] [2020-10-24 02:30:16,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 02:30:16,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 02:30:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:30:16,460 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 20 states. [2020-10-24 02:30:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:17,800 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2020-10-24 02:30:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 02:30:17,800 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 83 [2020-10-24 02:30:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:17,802 INFO L225 Difference]: With dead ends: 101 [2020-10-24 02:30:17,802 INFO L226 Difference]: Without dead ends: 97 [2020-10-24 02:30:17,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2020-10-24 02:30:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-24 02:30:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-10-24 02:30:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-24 02:30:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-10-24 02:30:17,839 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-10-24 02:30:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:17,841 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-10-24 02:30:17,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 02:30:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-10-24 02:30:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-24 02:30:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:17,848 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:17,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:30:17,849 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -661925412, now seen corresponding path program 8 times [2020-10-24 02:30:17,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:17,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516109370] [2020-10-24 02:30:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-24 02:30:18,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516109370] [2020-10-24 02:30:18,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:18,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 02:30:18,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134786801] [2020-10-24 02:30:18,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 02:30:18,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:18,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 02:30:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-10-24 02:30:18,260 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 22 states. [2020-10-24 02:30:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:19,755 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2020-10-24 02:30:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-24 02:30:19,759 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 92 [2020-10-24 02:30:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:19,760 INFO L225 Difference]: With dead ends: 110 [2020-10-24 02:30:19,760 INFO L226 Difference]: Without dead ends: 106 [2020-10-24 02:30:19,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=628, Invalid=1822, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 02:30:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-24 02:30:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-24 02:30:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-24 02:30:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-10-24 02:30:19,793 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-10-24 02:30:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:19,794 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-10-24 02:30:19,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 02:30:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-10-24 02:30:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-24 02:30:19,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:19,799 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:19,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:30:19,800 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:19,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1761965521, now seen corresponding path program 9 times [2020-10-24 02:30:19,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:19,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661353230] [2020-10-24 02:30:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-24 02:30:20,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661353230] [2020-10-24 02:30:20,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:20,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-24 02:30:20,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34637482] [2020-10-24 02:30:20,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-24 02:30:20,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:20,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-24 02:30:20,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:30:20,191 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 24 states. [2020-10-24 02:30:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:21,904 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2020-10-24 02:30:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-24 02:30:21,905 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-10-24 02:30:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:21,906 INFO L225 Difference]: With dead ends: 119 [2020-10-24 02:30:21,906 INFO L226 Difference]: Without dead ends: 115 [2020-10-24 02:30:21,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=766, Invalid=2204, Unknown=0, NotChecked=0, Total=2970 [2020-10-24 02:30:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-24 02:30:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-10-24 02:30:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-24 02:30:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-10-24 02:30:21,931 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-10-24 02:30:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:21,931 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-10-24 02:30:21,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-24 02:30:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-10-24 02:30:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-24 02:30:21,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:21,933 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:21,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:30:21,933 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:21,934 INFO L82 PathProgramCache]: Analyzing trace with hash 829062972, now seen corresponding path program 10 times [2020-10-24 02:30:21,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:21,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153223798] [2020-10-24 02:30:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-24 02:30:22,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153223798] [2020-10-24 02:30:22,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:22,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-24 02:30:22,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002811892] [2020-10-24 02:30:22,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-24 02:30:22,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:22,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-24 02:30:22,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:30:22,410 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 26 states. [2020-10-24 02:30:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:24,351 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-10-24 02:30:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 02:30:24,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 110 [2020-10-24 02:30:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:24,354 INFO L225 Difference]: With dead ends: 128 [2020-10-24 02:30:24,354 INFO L226 Difference]: Without dead ends: 124 [2020-10-24 02:30:24,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=918, Invalid=2622, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 02:30:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-24 02:30:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-24 02:30:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-24 02:30:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-10-24 02:30:24,374 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-10-24 02:30:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:24,374 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-10-24 02:30:24,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-24 02:30:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-10-24 02:30:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-24 02:30:24,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:24,376 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:24,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:30:24,376 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:24,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1797723953, now seen corresponding path program 11 times [2020-10-24 02:30:24,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:24,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517066179] [2020-10-24 02:30:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 22 proven. 297 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-24 02:30:24,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517066179] [2020-10-24 02:30:24,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:24,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-24 02:30:24,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429511014] [2020-10-24 02:30:24,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-24 02:30:24,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-24 02:30:24,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2020-10-24 02:30:24,886 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 28 states. [2020-10-24 02:30:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:27,148 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2020-10-24 02:30:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-24 02:30:27,149 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 119 [2020-10-24 02:30:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:27,151 INFO L225 Difference]: With dead ends: 137 [2020-10-24 02:30:27,151 INFO L226 Difference]: Without dead ends: 133 [2020-10-24 02:30:27,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1084, Invalid=3076, Unknown=0, NotChecked=0, Total=4160 [2020-10-24 02:30:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-24 02:30:27,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-10-24 02:30:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-24 02:30:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-10-24 02:30:27,172 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-10-24 02:30:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:27,172 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-10-24 02:30:27,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-24 02:30:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-10-24 02:30:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-24 02:30:27,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:27,174 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:27,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:30:27,175 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:27,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1833134948, now seen corresponding path program 12 times [2020-10-24 02:30:27,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:27,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808203770] [2020-10-24 02:30:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 24 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-24 02:30:27,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808203770] [2020-10-24 02:30:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-24 02:30:27,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606372475] [2020-10-24 02:30:27,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-24 02:30:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:27,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-24 02:30:27,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2020-10-24 02:30:27,718 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 30 states. [2020-10-24 02:30:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:30,310 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2020-10-24 02:30:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-24 02:30:30,311 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 128 [2020-10-24 02:30:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:30,313 INFO L225 Difference]: With dead ends: 146 [2020-10-24 02:30:30,313 INFO L226 Difference]: Without dead ends: 142 [2020-10-24 02:30:30,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1264, Invalid=3566, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 02:30:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-24 02:30:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-10-24 02:30:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-24 02:30:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-10-24 02:30:30,334 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-10-24 02:30:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:30,335 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-10-24 02:30:30,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-24 02:30:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-10-24 02:30:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-24 02:30:30,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:30,337 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:30,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 02:30:30,337 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:30,338 INFO L82 PathProgramCache]: Analyzing trace with hash 832102255, now seen corresponding path program 13 times [2020-10-24 02:30:30,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:30,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327554178] [2020-10-24 02:30:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 416 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-24 02:30:30,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327554178] [2020-10-24 02:30:30,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:30,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-24 02:30:30,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411265767] [2020-10-24 02:30:30,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-24 02:30:30,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-24 02:30:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-10-24 02:30:30,948 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 32 states. [2020-10-24 02:30:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:33,589 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2020-10-24 02:30:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-24 02:30:33,590 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 137 [2020-10-24 02:30:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:33,591 INFO L225 Difference]: With dead ends: 155 [2020-10-24 02:30:33,591 INFO L226 Difference]: Without dead ends: 151 [2020-10-24 02:30:33,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1458, Invalid=4092, Unknown=0, NotChecked=0, Total=5550 [2020-10-24 02:30:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-24 02:30:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-24 02:30:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-24 02:30:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-10-24 02:30:33,614 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-10-24 02:30:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:33,614 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-10-24 02:30:33,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-24 02:30:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-10-24 02:30:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-24 02:30:33,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:33,617 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:33,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 02:30:33,617 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash 494408188, now seen corresponding path program 14 times [2020-10-24 02:30:33,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:33,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312476648] [2020-10-24 02:30:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 28 proven. 483 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-24 02:30:34,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312476648] [2020-10-24 02:30:34,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:34,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-24 02:30:34,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291456182] [2020-10-24 02:30:34,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-24 02:30:34,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:34,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-24 02:30:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 02:30:34,337 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 34 states. [2020-10-24 02:30:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:37,342 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2020-10-24 02:30:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-24 02:30:37,343 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 146 [2020-10-24 02:30:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:37,345 INFO L225 Difference]: With dead ends: 164 [2020-10-24 02:30:37,345 INFO L226 Difference]: Without dead ends: 160 [2020-10-24 02:30:37,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1666, Invalid=4654, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 02:30:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-24 02:30:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-10-24 02:30:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-24 02:30:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-10-24 02:30:37,367 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-10-24 02:30:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:37,367 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-10-24 02:30:37,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-24 02:30:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-10-24 02:30:37,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-24 02:30:37,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:37,370 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:37,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 02:30:37,370 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:37,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:37,371 INFO L82 PathProgramCache]: Analyzing trace with hash 17067535, now seen corresponding path program 15 times [2020-10-24 02:30:37,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:37,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912514129] [2020-10-24 02:30:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:30:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 30 proven. 555 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-24 02:30:38,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912514129] [2020-10-24 02:30:38,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:38,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-24 02:30:38,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929788631] [2020-10-24 02:30:38,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-24 02:30:38,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:38,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-24 02:30:38,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=966, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 02:30:38,126 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 36 states. [2020-10-24 02:30:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:41,311 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2020-10-24 02:30:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-24 02:30:41,311 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 155 [2020-10-24 02:30:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:41,313 INFO L225 Difference]: With dead ends: 173 [2020-10-24 02:30:41,313 INFO L226 Difference]: Without dead ends: 169 [2020-10-24 02:30:41,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1888, Invalid=5252, Unknown=0, NotChecked=0, Total=7140 [2020-10-24 02:30:41,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-24 02:30:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-10-24 02:30:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-24 02:30:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-10-24 02:30:41,337 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-10-24 02:30:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:41,337 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-10-24 02:30:41,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-24 02:30:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-10-24 02:30:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-24 02:30:41,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:41,340 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:41,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 02:30:41,340 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash -518850724, now seen corresponding path program 16 times [2020-10-24 02:30:41,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:41,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411854700] [2020-10-24 02:30:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:30:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:30:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 32 proven. 632 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-10-24 02:30:42,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411854700] [2020-10-24 02:30:42,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:42,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-24 02:30:42,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666519725] [2020-10-24 02:30:42,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-24 02:30:42,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:42,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-24 02:30:42,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 02:30:42,176 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 38 states. [2020-10-24 02:30:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:45,869 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2020-10-24 02:30:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-24 02:30:45,870 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 164 [2020-10-24 02:30:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:45,871 INFO L225 Difference]: With dead ends: 182 [2020-10-24 02:30:45,872 INFO L226 Difference]: Without dead ends: 178 [2020-10-24 02:30:45,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2124, Invalid=5886, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 02:30:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-24 02:30:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-10-24 02:30:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-24 02:30:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-10-24 02:30:45,898 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-10-24 02:30:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:45,899 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-10-24 02:30:45,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-24 02:30:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-10-24 02:30:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-24 02:30:45,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:45,901 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:45,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 02:30:45,901 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash -127560529, now seen corresponding path program 17 times [2020-10-24 02:30:45,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:45,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649679923] [2020-10-24 02:30:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:30:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:30:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:30:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 34 proven. 714 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-10-24 02:30:46,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649679923] [2020-10-24 02:30:46,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:46,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-24 02:30:46,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086780919] [2020-10-24 02:30:46,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-24 02:30:46,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:46,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-24 02:30:46,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1194, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 02:30:46,841 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 40 states. [2020-10-24 02:30:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:50,750 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2020-10-24 02:30:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-24 02:30:50,751 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 173 [2020-10-24 02:30:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:50,752 INFO L225 Difference]: With dead ends: 191 [2020-10-24 02:30:50,753 INFO L226 Difference]: Without dead ends: 187 [2020-10-24 02:30:50,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2374, Invalid=6556, Unknown=0, NotChecked=0, Total=8930 [2020-10-24 02:30:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-24 02:30:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-10-24 02:30:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-24 02:30:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-10-24 02:30:50,777 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-10-24 02:30:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:50,778 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-10-24 02:30:50,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-24 02:30:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-10-24 02:30:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-24 02:30:50,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:50,780 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:50,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 02:30:50,780 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash 998458556, now seen corresponding path program 18 times [2020-10-24 02:30:50,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:50,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219292422] [2020-10-24 02:30:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:30:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:30:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:30:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:30:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 36 proven. 801 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-10-24 02:30:51,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219292422] [2020-10-24 02:30:51,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:51,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-24 02:30:51,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255650279] [2020-10-24 02:30:51,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-24 02:30:51,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-24 02:30:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 02:30:51,786 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 42 states. [2020-10-24 02:30:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:55,862 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2020-10-24 02:30:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-24 02:30:55,863 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 182 [2020-10-24 02:30:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:55,865 INFO L225 Difference]: With dead ends: 200 [2020-10-24 02:30:55,865 INFO L226 Difference]: Without dead ends: 196 [2020-10-24 02:30:55,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2638, Invalid=7262, Unknown=0, NotChecked=0, Total=9900 [2020-10-24 02:30:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-24 02:30:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-24 02:30:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-24 02:30:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-10-24 02:30:55,894 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-10-24 02:30:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:55,895 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-10-24 02:30:55,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-24 02:30:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-10-24 02:30:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-24 02:30:55,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:55,897 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:55,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 02:30:55,897 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:55,898 INFO L82 PathProgramCache]: Analyzing trace with hash 243684175, now seen corresponding path program 19 times [2020-10-24 02:30:55,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:55,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901790073] [2020-10-24 02:30:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:30:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:30:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:30:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:30:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:30:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:30:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:30:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:30:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:30:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:30:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:30:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:30:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:30:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:30:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:30:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:30:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:30:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:30:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:30:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 38 proven. 893 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-10-24 02:30:56,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901790073] [2020-10-24 02:30:56,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:56,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-24 02:30:56,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604111870] [2020-10-24 02:30:56,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-24 02:30:56,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:56,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-24 02:30:56,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=1446, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 02:30:56,977 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 44 states. [2020-10-24 02:31:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:01,507 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2020-10-24 02:31:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-24 02:31:01,508 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 191 [2020-10-24 02:31:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:01,509 INFO L225 Difference]: With dead ends: 209 [2020-10-24 02:31:01,509 INFO L226 Difference]: Without dead ends: 205 [2020-10-24 02:31:01,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2916, Invalid=8004, Unknown=0, NotChecked=0, Total=10920 [2020-10-24 02:31:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-24 02:31:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-10-24 02:31:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-24 02:31:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-10-24 02:31:01,539 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-10-24 02:31:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:01,539 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-10-24 02:31:01,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-24 02:31:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-10-24 02:31:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-24 02:31:01,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:01,541 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:01,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 02:31:01,541 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:01,542 INFO L82 PathProgramCache]: Analyzing trace with hash 960428572, now seen corresponding path program 20 times [2020-10-24 02:31:01,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:01,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055233663] [2020-10-24 02:31:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 40 proven. 990 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-10-24 02:31:02,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055233663] [2020-10-24 02:31:02,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:02,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-24 02:31:02,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731402873] [2020-10-24 02:31:02,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-24 02:31:02,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:02,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-24 02:31:02,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1581, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 02:31:02,650 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 46 states. [2020-10-24 02:31:07,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:07,498 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2020-10-24 02:31:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-24 02:31:07,499 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 200 [2020-10-24 02:31:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:07,501 INFO L225 Difference]: With dead ends: 218 [2020-10-24 02:31:07,502 INFO L226 Difference]: Without dead ends: 214 [2020-10-24 02:31:07,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3208, Invalid=8782, Unknown=0, NotChecked=0, Total=11990 [2020-10-24 02:31:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-24 02:31:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-10-24 02:31:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-24 02:31:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-10-24 02:31:07,531 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-10-24 02:31:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:07,531 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-10-24 02:31:07,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-24 02:31:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-10-24 02:31:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-24 02:31:07,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:07,533 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:07,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 02:31:07,534 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:07,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -609179153, now seen corresponding path program 21 times [2020-10-24 02:31:07,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:07,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418338265] [2020-10-24 02:31:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 42 proven. 1092 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-24 02:31:08,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418338265] [2020-10-24 02:31:08,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:08,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-24 02:31:08,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201815276] [2020-10-24 02:31:08,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-24 02:31:08,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-24 02:31:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 02:31:08,827 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 48 states. [2020-10-24 02:31:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:14,229 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2020-10-24 02:31:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-24 02:31:14,233 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 209 [2020-10-24 02:31:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:14,235 INFO L225 Difference]: With dead ends: 227 [2020-10-24 02:31:14,236 INFO L226 Difference]: Without dead ends: 223 [2020-10-24 02:31:14,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3514, Invalid=9596, Unknown=0, NotChecked=0, Total=13110 [2020-10-24 02:31:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-24 02:31:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-10-24 02:31:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-24 02:31:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-10-24 02:31:14,280 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-10-24 02:31:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:14,280 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-10-24 02:31:14,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-24 02:31:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-10-24 02:31:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-24 02:31:14,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:14,284 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:14,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 02:31:14,285 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:14,285 INFO L82 PathProgramCache]: Analyzing trace with hash -180611204, now seen corresponding path program 22 times [2020-10-24 02:31:14,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:14,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127239963] [2020-10-24 02:31:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-10-24 02:31:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127239963] [2020-10-24 02:31:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:15,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-24 02:31:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755079466] [2020-10-24 02:31:15,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-24 02:31:15,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:15,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-24 02:31:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 02:31:15,727 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 50 states. [2020-10-24 02:31:21,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:21,383 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2020-10-24 02:31:21,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-24 02:31:21,383 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 218 [2020-10-24 02:31:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:21,385 INFO L225 Difference]: With dead ends: 236 [2020-10-24 02:31:21,385 INFO L226 Difference]: Without dead ends: 232 [2020-10-24 02:31:21,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3236 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3834, Invalid=10446, Unknown=0, NotChecked=0, Total=14280 [2020-10-24 02:31:21,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-24 02:31:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-10-24 02:31:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-24 02:31:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-10-24 02:31:21,429 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-10-24 02:31:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:21,429 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-10-24 02:31:21,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-24 02:31:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-10-24 02:31:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-24 02:31:21,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:21,433 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:21,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 02:31:21,433 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 967743631, now seen corresponding path program 23 times [2020-10-24 02:31:21,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:21,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489076774] [2020-10-24 02:31:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:31:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 46 proven. 1311 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-10-24 02:31:22,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489076774] [2020-10-24 02:31:22,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:22,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-24 02:31:22,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231073036] [2020-10-24 02:31:22,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-24 02:31:22,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-24 02:31:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=2022, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 02:31:22,945 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 52 states. [2020-10-24 02:31:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:29,110 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2020-10-24 02:31:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-24 02:31:29,110 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 227 [2020-10-24 02:31:29,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:29,112 INFO L225 Difference]: With dead ends: 245 [2020-10-24 02:31:29,112 INFO L226 Difference]: Without dead ends: 241 [2020-10-24 02:31:29,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4168, Invalid=11332, Unknown=0, NotChecked=0, Total=15500 [2020-10-24 02:31:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-24 02:31:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-10-24 02:31:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-24 02:31:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-10-24 02:31:29,158 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-10-24 02:31:29,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:29,158 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-10-24 02:31:29,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-24 02:31:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-10-24 02:31:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-24 02:31:29,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:29,160 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:29,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 02:31:29,161 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -118448932, now seen corresponding path program 24 times [2020-10-24 02:31:29,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:29,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988970079] [2020-10-24 02:31:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:31:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 48 proven. 1428 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-10-24 02:31:30,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988970079] [2020-10-24 02:31:30,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:30,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-24 02:31:30,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141755982] [2020-10-24 02:31:30,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-24 02:31:30,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-24 02:31:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2020-10-24 02:31:30,808 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 54 states. [2020-10-24 02:31:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:37,406 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2020-10-24 02:31:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-24 02:31:37,407 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 236 [2020-10-24 02:31:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:37,408 INFO L225 Difference]: With dead ends: 254 [2020-10-24 02:31:37,408 INFO L226 Difference]: Without dead ends: 250 [2020-10-24 02:31:37,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=4516, Invalid=12254, Unknown=0, NotChecked=0, Total=16770 [2020-10-24 02:31:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-24 02:31:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-10-24 02:31:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-24 02:31:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-10-24 02:31:37,447 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-10-24 02:31:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:37,448 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-10-24 02:31:37,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-24 02:31:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-10-24 02:31:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-24 02:31:37,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:37,450 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:37,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-24 02:31:37,450 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash -473293009, now seen corresponding path program 25 times [2020-10-24 02:31:37,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:37,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849053694] [2020-10-24 02:31:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:31:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:31:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 50 proven. 1550 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-24 02:31:39,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849053694] [2020-10-24 02:31:39,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:39,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-24 02:31:39,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367651268] [2020-10-24 02:31:39,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-24 02:31:39,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:39,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-24 02:31:39,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=734, Invalid=2346, Unknown=0, NotChecked=0, Total=3080 [2020-10-24 02:31:39,203 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 56 states. [2020-10-24 02:31:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:46,441 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2020-10-24 02:31:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-24 02:31:46,442 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 245 [2020-10-24 02:31:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:46,446 INFO L225 Difference]: With dead ends: 263 [2020-10-24 02:31:46,446 INFO L226 Difference]: Without dead ends: 259 [2020-10-24 02:31:46,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4878, Invalid=13212, Unknown=0, NotChecked=0, Total=18090 [2020-10-24 02:31:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-24 02:31:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-10-24 02:31:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-24 02:31:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-10-24 02:31:46,486 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-10-24 02:31:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:46,486 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-10-24 02:31:46,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-24 02:31:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-10-24 02:31:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-24 02:31:46,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:46,488 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:46,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-24 02:31:46,488 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1672312260, now seen corresponding path program 26 times [2020-10-24 02:31:46,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:46,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928721451] [2020-10-24 02:31:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:31:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:31:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:31:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 52 proven. 1677 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-10-24 02:31:48,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928721451] [2020-10-24 02:31:48,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:48,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-24 02:31:48,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970515336] [2020-10-24 02:31:48,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-24 02:31:48,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:48,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-24 02:31:48,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=2517, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 02:31:48,493 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 58 states. [2020-10-24 02:31:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:31:56,052 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions. [2020-10-24 02:31:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-24 02:31:56,053 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 254 [2020-10-24 02:31:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:31:56,054 INFO L225 Difference]: With dead ends: 272 [2020-10-24 02:31:56,055 INFO L226 Difference]: Without dead ends: 268 [2020-10-24 02:31:56,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4448 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5254, Invalid=14206, Unknown=0, NotChecked=0, Total=19460 [2020-10-24 02:31:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-24 02:31:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-10-24 02:31:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-24 02:31:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-10-24 02:31:56,094 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-10-24 02:31:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:31:56,095 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-10-24 02:31:56,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-24 02:31:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-10-24 02:31:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-24 02:31:56,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:31:56,097 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:31:56,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-24 02:31:56,097 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:31:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:31:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash 382549455, now seen corresponding path program 27 times [2020-10-24 02:31:56,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:31:56,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824399407] [2020-10-24 02:31:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:31:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:31:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:31:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:31:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:31:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:31:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:31:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:31:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:31:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:31:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:31:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:31:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:31:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:31:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:31:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:31:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:31:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:31:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:31:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:31:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:31:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:31:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:31:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:31:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:31:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:31:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:31:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:31:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:31:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:31:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 54 proven. 1809 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-10-24 02:31:58,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824399407] [2020-10-24 02:31:58,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:31:58,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-24 02:31:58,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110452204] [2020-10-24 02:31:58,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-24 02:31:58,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:31:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-24 02:31:58,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=2694, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 02:31:58,219 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 60 states. [2020-10-24 02:32:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:06,358 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2020-10-24 02:32:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-24 02:32:06,358 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 263 [2020-10-24 02:32:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:06,360 INFO L225 Difference]: With dead ends: 281 [2020-10-24 02:32:06,360 INFO L226 Difference]: Without dead ends: 277 [2020-10-24 02:32:06,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=5644, Invalid=15236, Unknown=0, NotChecked=0, Total=20880 [2020-10-24 02:32:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-24 02:32:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-10-24 02:32:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-24 02:32:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-10-24 02:32:06,404 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-10-24 02:32:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:06,404 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-10-24 02:32:06,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-24 02:32:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-10-24 02:32:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-24 02:32:06,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:06,406 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:32:06,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-24 02:32:06,407 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:06,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:06,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1708646300, now seen corresponding path program 28 times [2020-10-24 02:32:06,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:06,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868500641] [2020-10-24 02:32:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:32:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:32:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:32:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:32:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:32:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:32:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:32:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:32:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:32:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:32:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:32:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:32:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:32:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:32:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:32:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:32:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:32:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:32:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:32:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:32:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:32:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:32:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:32:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:32:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:32:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:32:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3514 backedges. 56 proven. 1946 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-10-24 02:32:08,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868500641] [2020-10-24 02:32:08,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:08,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-24 02:32:08,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854020435] [2020-10-24 02:32:08,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-24 02:32:08,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:08,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-24 02:32:08,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-10-24 02:32:08,664 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 62 states. [2020-10-24 02:32:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:17,608 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2020-10-24 02:32:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-24 02:32:17,609 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 272 [2020-10-24 02:32:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:17,611 INFO L225 Difference]: With dead ends: 290 [2020-10-24 02:32:17,612 INFO L226 Difference]: Without dead ends: 286 [2020-10-24 02:32:17,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5126 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=6048, Invalid=16302, Unknown=0, NotChecked=0, Total=22350 [2020-10-24 02:32:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-24 02:32:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-10-24 02:32:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-24 02:32:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-10-24 02:32:17,656 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-10-24 02:32:17,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:17,657 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-10-24 02:32:17,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-24 02:32:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-10-24 02:32:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-24 02:32:17,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:17,659 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:32:17,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-24 02:32:17,659 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:17,660 INFO L82 PathProgramCache]: Analyzing trace with hash 822211695, now seen corresponding path program 29 times [2020-10-24 02:32:17,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:17,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509117375] [2020-10-24 02:32:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:32:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:32:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:32:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:32:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:32:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:32:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:32:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:32:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:32:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:32:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:32:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:32:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:32:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:32:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:32:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:32:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:32:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:32:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:32:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:32:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:32:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:32:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:32:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:32:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:32:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:32:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:32:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 58 proven. 2088 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-10-24 02:32:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509117375] [2020-10-24 02:32:19,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:19,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-24 02:32:19,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209627949] [2020-10-24 02:32:20,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-24 02:32:20,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:20,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-24 02:32:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=966, Invalid=3066, Unknown=0, NotChecked=0, Total=4032 [2020-10-24 02:32:20,001 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 64 states. [2020-10-24 02:32:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:29,426 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2020-10-24 02:32:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-24 02:32:29,427 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 281 [2020-10-24 02:32:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:29,429 INFO L225 Difference]: With dead ends: 299 [2020-10-24 02:32:29,429 INFO L226 Difference]: Without dead ends: 295 [2020-10-24 02:32:29,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5483 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=6466, Invalid=17404, Unknown=0, NotChecked=0, Total=23870 [2020-10-24 02:32:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-24 02:32:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-10-24 02:32:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-24 02:32:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-10-24 02:32:29,485 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-10-24 02:32:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:29,486 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-10-24 02:32:29,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-24 02:32:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-10-24 02:32:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-24 02:32:29,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:29,488 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:32:29,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-24 02:32:29,488 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1786158332, now seen corresponding path program 30 times [2020-10-24 02:32:29,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766168195] [2020-10-24 02:32:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:32:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:32:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:32:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:32:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:32:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:32:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:32:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:32:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:32:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:32:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:32:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:32:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:32:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:32:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:32:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:32:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:32:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:32:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:32:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:32:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:32:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:32:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:32:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:32:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:32:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:32:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:32:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:32:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 60 proven. 2235 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-10-24 02:32:32,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766168195] [2020-10-24 02:32:32,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:32,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-24 02:32:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126540723] [2020-10-24 02:32:32,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-24 02:32:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-24 02:32:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1029, Invalid=3261, Unknown=0, NotChecked=0, Total=4290 [2020-10-24 02:32:32,038 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 66 states. [2020-10-24 02:32:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:42,199 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2020-10-24 02:32:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-24 02:32:42,200 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 290 [2020-10-24 02:32:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:42,202 INFO L225 Difference]: With dead ends: 308 [2020-10-24 02:32:42,202 INFO L226 Difference]: Without dead ends: 304 [2020-10-24 02:32:42,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5852 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=6898, Invalid=18542, Unknown=0, NotChecked=0, Total=25440 [2020-10-24 02:32:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-24 02:32:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-10-24 02:32:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-24 02:32:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-10-24 02:32:42,239 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-10-24 02:32:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:42,240 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-10-24 02:32:42,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-24 02:32:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-10-24 02:32:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-24 02:32:42,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:42,242 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:32:42,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-24 02:32:42,242 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1379025679, now seen corresponding path program 31 times [2020-10-24 02:32:42,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:42,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285617603] [2020-10-24 02:32:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:32:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:32:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:32:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:32:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:32:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:32:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:32:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:32:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:32:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:32:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:32:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:32:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:32:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:32:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:32:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:32:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:32:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:32:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:32:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:32:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:32:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:32:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:32:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:32:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:32:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:32:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:32:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:32:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:32:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 62 proven. 2387 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-10-24 02:32:45,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285617603] [2020-10-24 02:32:45,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:45,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-24 02:32:45,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206987782] [2020-10-24 02:32:45,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-24 02:32:45,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-24 02:32:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=3462, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 02:32:45,057 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 68 states. [2020-10-24 02:32:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:32:55,516 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2020-10-24 02:32:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-24 02:32:55,516 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 299 [2020-10-24 02:32:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:32:55,519 INFO L225 Difference]: With dead ends: 317 [2020-10-24 02:32:55,519 INFO L226 Difference]: Without dead ends: 313 [2020-10-24 02:32:55,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6233 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=7344, Invalid=19716, Unknown=0, NotChecked=0, Total=27060 [2020-10-24 02:32:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-24 02:32:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-10-24 02:32:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-24 02:32:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-10-24 02:32:55,570 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-10-24 02:32:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:32:55,570 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-10-24 02:32:55,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-24 02:32:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-10-24 02:32:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-24 02:32:55,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:32:55,572 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:32:55,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-24 02:32:55,573 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:32:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:32:55,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1381711268, now seen corresponding path program 32 times [2020-10-24 02:32:55,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:32:55,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505626455] [2020-10-24 02:32:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:32:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:32:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:32:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:32:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:32:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:32:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:32:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:32:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:32:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:32:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:32:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:32:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:32:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:32:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:32:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:32:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:32:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:32:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:32:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:32:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:32:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:32:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:32:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:32:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:32:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:32:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:32:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:32:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:32:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:32:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:32:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:32:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:32:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:32:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:32:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 64 proven. 2544 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-10-24 02:32:58,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505626455] [2020-10-24 02:32:58,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:32:58,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-24 02:32:58,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440779100] [2020-10-24 02:32:58,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-24 02:32:58,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:32:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-24 02:32:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1161, Invalid=3669, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 02:32:58,654 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 70 states. [2020-10-24 02:33:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:09,756 INFO L93 Difference]: Finished difference Result 326 states and 326 transitions. [2020-10-24 02:33:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-24 02:33:09,757 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 308 [2020-10-24 02:33:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:09,759 INFO L225 Difference]: With dead ends: 326 [2020-10-24 02:33:09,759 INFO L226 Difference]: Without dead ends: 322 [2020-10-24 02:33:09,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=7804, Invalid=20926, Unknown=0, NotChecked=0, Total=28730 [2020-10-24 02:33:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-24 02:33:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-10-24 02:33:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-24 02:33:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-10-24 02:33:09,804 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-10-24 02:33:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:09,805 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-10-24 02:33:09,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-24 02:33:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-10-24 02:33:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-24 02:33:09,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:09,807 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:33:09,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-24 02:33:09,807 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash -72865361, now seen corresponding path program 33 times [2020-10-24 02:33:09,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:09,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198875135] [2020-10-24 02:33:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:33:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:33:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:33:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:33:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:33:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:33:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:33:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:33:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:33:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:33:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:33:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:33:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:33:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:33:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:33:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:33:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:33:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:33:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:33:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:33:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:33:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:33:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:33:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:33:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:33:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:33:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:33:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:33:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:33:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:33:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:33:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:33:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:33:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 66 proven. 2706 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-10-24 02:33:13,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198875135] [2020-10-24 02:33:13,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:13,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-24 02:33:13,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955814043] [2020-10-24 02:33:13,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-24 02:33:13,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:13,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-24 02:33:13,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1230, Invalid=3882, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 02:33:13,115 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 72 states. [2020-10-24 02:33:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:25,272 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2020-10-24 02:33:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-10-24 02:33:25,273 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 317 [2020-10-24 02:33:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:25,276 INFO L225 Difference]: With dead ends: 335 [2020-10-24 02:33:25,276 INFO L226 Difference]: Without dead ends: 331 [2020-10-24 02:33:25,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7031 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=8278, Invalid=22172, Unknown=0, NotChecked=0, Total=30450 [2020-10-24 02:33:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-24 02:33:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-10-24 02:33:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-24 02:33:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-10-24 02:33:25,331 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-10-24 02:33:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:25,331 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-10-24 02:33:25,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-24 02:33:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-10-24 02:33:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-24 02:33:25,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:25,333 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:33:25,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-24 02:33:25,333 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2124918852, now seen corresponding path program 34 times [2020-10-24 02:33:25,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:25,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185119010] [2020-10-24 02:33:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:33:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:33:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:33:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:33:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:33:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:33:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:33:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:33:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:33:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:33:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:33:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:33:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:33:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:33:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:33:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:33:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:33:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:33:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:33:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:33:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:33:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:33:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:33:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:33:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:33:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:33:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:33:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:33:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:33:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:33:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:33:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:33:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:33:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:33:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 68 proven. 2873 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-10-24 02:33:28,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185119010] [2020-10-24 02:33:28,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:28,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-24 02:33:28,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317949650] [2020-10-24 02:33:28,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-24 02:33:28,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:28,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-24 02:33:28,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=4101, Unknown=0, NotChecked=0, Total=5402 [2020-10-24 02:33:28,738 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 74 states. [2020-10-24 02:33:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:41,244 INFO L93 Difference]: Finished difference Result 344 states and 344 transitions. [2020-10-24 02:33:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-24 02:33:41,245 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 326 [2020-10-24 02:33:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:41,249 INFO L225 Difference]: With dead ends: 344 [2020-10-24 02:33:41,249 INFO L226 Difference]: Without dead ends: 340 [2020-10-24 02:33:41,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7448 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=8766, Invalid=23454, Unknown=0, NotChecked=0, Total=32220 [2020-10-24 02:33:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-24 02:33:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-10-24 02:33:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-24 02:33:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-10-24 02:33:41,307 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-10-24 02:33:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:41,307 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-10-24 02:33:41,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-24 02:33:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-10-24 02:33:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-24 02:33:41,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:41,310 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:33:41,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-24 02:33:41,310 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1339185073, now seen corresponding path program 35 times [2020-10-24 02:33:41,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:41,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846535320] [2020-10-24 02:33:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:33:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:33:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:33:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:33:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:33:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:33:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:33:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:33:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:33:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:33:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:33:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:33:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:33:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:33:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:33:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:33:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:33:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:33:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:33:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:33:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:33:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:33:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:33:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:33:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:33:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:33:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:33:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:33:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:33:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:33:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:33:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:33:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:33:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:33:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:33:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:33:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:33:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 70 proven. 3045 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-10-24 02:33:44,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846535320] [2020-10-24 02:33:44,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:33:44,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-24 02:33:44,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374659771] [2020-10-24 02:33:44,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-24 02:33:44,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:33:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-24 02:33:44,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1374, Invalid=4326, Unknown=0, NotChecked=0, Total=5700 [2020-10-24 02:33:44,931 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 76 states. [2020-10-24 02:33:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:33:58,251 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2020-10-24 02:33:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-10-24 02:33:58,252 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 335 [2020-10-24 02:33:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:33:58,254 INFO L225 Difference]: With dead ends: 353 [2020-10-24 02:33:58,254 INFO L226 Difference]: Without dead ends: 349 [2020-10-24 02:33:58,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7877 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=9268, Invalid=24772, Unknown=0, NotChecked=0, Total=34040 [2020-10-24 02:33:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-24 02:33:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-24 02:33:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-24 02:33:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-10-24 02:33:58,313 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-10-24 02:33:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:33:58,314 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-10-24 02:33:58,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-24 02:33:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-10-24 02:33:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-24 02:33:58,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:33:58,316 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:33:58,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-24 02:33:58,317 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:33:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:33:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash -435731172, now seen corresponding path program 36 times [2020-10-24 02:33:58,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:33:58,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383854483] [2020-10-24 02:33:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:33:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:34:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:34:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:34:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:34:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:34:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:34:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:34:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:34:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:34:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:34:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:34:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:34:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:34:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:34:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:34:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:34:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:34:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:34:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:34:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:34:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:34:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:34:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:34:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:34:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:34:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:34:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:34:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:34:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:34:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:34:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:34:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:34:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:34:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:34:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:34:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:34:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 72 proven. 3222 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-10-24 02:34:02,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383854483] [2020-10-24 02:34:02,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:02,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-24 02:34:02,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015992065] [2020-10-24 02:34:02,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-24 02:34:02,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:02,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-24 02:34:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=4557, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 02:34:02,148 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 78 states. [2020-10-24 02:34:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:16,747 INFO L93 Difference]: Finished difference Result 362 states and 362 transitions. [2020-10-24 02:34:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-10-24 02:34:16,748 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 344 [2020-10-24 02:34:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:16,750 INFO L225 Difference]: With dead ends: 362 [2020-10-24 02:34:16,750 INFO L226 Difference]: Without dead ends: 358 [2020-10-24 02:34:16,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=9784, Invalid=26126, Unknown=0, NotChecked=0, Total=35910 [2020-10-24 02:34:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-24 02:34:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-10-24 02:34:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-24 02:34:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-10-24 02:34:16,812 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-10-24 02:34:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:16,813 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-10-24 02:34:16,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-24 02:34:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-10-24 02:34:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-24 02:34:16,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:16,816 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:34:16,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-24 02:34:16,816 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:16,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:16,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1811104017, now seen corresponding path program 37 times [2020-10-24 02:34:16,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:16,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115354306] [2020-10-24 02:34:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:34:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:34:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:34:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:34:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:34:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:34:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:34:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:34:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:34:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:34:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:34:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:34:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:34:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:34:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:34:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:34:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:34:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:34:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:34:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:34:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:34:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:34:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:34:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:34:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:34:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:34:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:34:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:34:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:34:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:34:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:34:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:34:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:34:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:34:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:34:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:34:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:34:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 74 proven. 3404 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-10-24 02:34:20,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115354306] [2020-10-24 02:34:20,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:20,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-24 02:34:20,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509333054] [2020-10-24 02:34:20,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-24 02:34:20,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:20,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-24 02:34:20,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1526, Invalid=4794, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 02:34:20,883 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 80 states. [2020-10-24 02:34:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:36,281 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2020-10-24 02:34:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-10-24 02:34:36,282 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 353 [2020-10-24 02:34:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:36,284 INFO L225 Difference]: With dead ends: 371 [2020-10-24 02:34:36,284 INFO L226 Difference]: Without dead ends: 367 [2020-10-24 02:34:36,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8771 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=10314, Invalid=27516, Unknown=0, NotChecked=0, Total=37830 [2020-10-24 02:34:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-24 02:34:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-10-24 02:34:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-24 02:34:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-10-24 02:34:36,356 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-10-24 02:34:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:36,356 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-10-24 02:34:36,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-24 02:34:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-10-24 02:34:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-24 02:34:36,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:36,359 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:34:36,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-24 02:34:36,359 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash -358112644, now seen corresponding path program 38 times [2020-10-24 02:34:36,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:36,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33426933] [2020-10-24 02:34:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:34:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:34:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:34:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:34:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:34:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:34:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:34:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:34:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:34:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:34:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:34:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:34:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:34:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:34:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:34:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:34:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:34:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:34:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:34:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:34:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:34:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:34:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:34:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:34:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:34:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:34:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:34:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:34:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:34:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:34:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:34:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:34:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:34:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:34:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:34:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:34:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:34:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:34:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:34:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:34:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 76 proven. 3591 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-10-24 02:34:40,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33426933] [2020-10-24 02:34:40,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:34:40,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-24 02:34:40,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568997927] [2020-10-24 02:34:40,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-24 02:34:40,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:34:40,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-24 02:34:40,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1605, Invalid=5037, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 02:34:40,729 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 82 states. [2020-10-24 02:34:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:34:57,122 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2020-10-24 02:34:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-24 02:34:57,123 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 362 [2020-10-24 02:34:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:34:57,125 INFO L225 Difference]: With dead ends: 380 [2020-10-24 02:34:57,125 INFO L226 Difference]: Without dead ends: 376 [2020-10-24 02:34:57,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9236 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=10858, Invalid=28942, Unknown=0, NotChecked=0, Total=39800 [2020-10-24 02:34:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-24 02:34:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-10-24 02:34:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-24 02:34:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-10-24 02:34:57,191 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-10-24 02:34:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:34:57,192 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-10-24 02:34:57,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-24 02:34:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-10-24 02:34:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-24 02:34:57,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:34:57,195 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:34:57,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-24 02:34:57,195 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:34:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:34:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash 219114895, now seen corresponding path program 39 times [2020-10-24 02:34:57,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:34:57,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695706561] [2020-10-24 02:34:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:34:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:35:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:35:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:35:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:35:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:35:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:35:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:35:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:35:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:35:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:35:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:35:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:35:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:35:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:35:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:35:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:35:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:35:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:35:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:35:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:35:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:35:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:35:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:35:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:35:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:35:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:35:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:35:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:35:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:35:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:35:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:35:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:35:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:35:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:35:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:35:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:35:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:35:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:35:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:35:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6825 backedges. 78 proven. 3783 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-10-24 02:35:01,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695706561] [2020-10-24 02:35:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-24 02:35:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527747292] [2020-10-24 02:35:01,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-24 02:35:01,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-24 02:35:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1686, Invalid=5286, Unknown=0, NotChecked=0, Total=6972 [2020-10-24 02:35:01,884 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 84 states. [2020-10-24 02:35:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:35:18,957 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2020-10-24 02:35:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-10-24 02:35:18,959 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 371 [2020-10-24 02:35:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:35:18,961 INFO L225 Difference]: With dead ends: 389 [2020-10-24 02:35:18,961 INFO L226 Difference]: Without dead ends: 385 [2020-10-24 02:35:18,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9713 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=11416, Invalid=30404, Unknown=0, NotChecked=0, Total=41820 [2020-10-24 02:35:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-24 02:35:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-10-24 02:35:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-24 02:35:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-10-24 02:35:19,045 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-10-24 02:35:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:35:19,046 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-10-24 02:35:19,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-24 02:35:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-10-24 02:35:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-24 02:35:19,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:35:19,049 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:35:19,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-24 02:35:19,049 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:35:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:35:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash 212821980, now seen corresponding path program 40 times [2020-10-24 02:35:19,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:35:19,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217051981] [2020-10-24 02:35:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:35:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:35:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:35:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:35:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:35:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:35:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:35:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:35:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:35:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:35:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:35:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:35:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:35:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:35:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:35:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:35:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:35:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:35:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:35:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:35:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:35:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:35:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:35:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:35:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:35:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:35:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:35:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:35:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:35:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:35:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:35:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:35:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:35:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:35:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:35:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:35:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:35:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:35:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:35:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:35:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:35:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 80 proven. 3980 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-10-24 02:35:24,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217051981] [2020-10-24 02:35:24,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:24,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-24 02:35:24,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343977433] [2020-10-24 02:35:24,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-24 02:35:24,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:24,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-24 02:35:24,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1769, Invalid=5541, Unknown=0, NotChecked=0, Total=7310 [2020-10-24 02:35:24,107 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 86 states. [2020-10-24 02:35:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:35:42,105 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2020-10-24 02:35:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-24 02:35:42,106 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 380 [2020-10-24 02:35:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:35:42,108 INFO L225 Difference]: With dead ends: 398 [2020-10-24 02:35:42,108 INFO L226 Difference]: Without dead ends: 394 [2020-10-24 02:35:42,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10202 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=11988, Invalid=31902, Unknown=0, NotChecked=0, Total=43890 [2020-10-24 02:35:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-24 02:35:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-10-24 02:35:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-24 02:35:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-10-24 02:35:42,173 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-10-24 02:35:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:35:42,174 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-10-24 02:35:42,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-24 02:35:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-10-24 02:35:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-24 02:35:42,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:35:42,177 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:35:42,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-24 02:35:42,178 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:35:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:35:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1652536367, now seen corresponding path program 41 times [2020-10-24 02:35:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:35:42,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563467526] [2020-10-24 02:35:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:35:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:35:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:35:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:35:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:35:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:35:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:35:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:35:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:35:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:35:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:35:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:35:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:35:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:35:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:35:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:35:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:35:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:35:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:35:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:35:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:35:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:35:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:35:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:35:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:35:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:35:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:35:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:35:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:35:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:35:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:35:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:35:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:35:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:35:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:35:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:35:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:35:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:35:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:35:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:35:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:35:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:35:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:35:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:35:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7544 backedges. 82 proven. 4182 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-10-24 02:35:47,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563467526] [2020-10-24 02:35:47,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:35:47,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-24 02:35:47,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121458084] [2020-10-24 02:35:47,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-24 02:35:47,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:35:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-24 02:35:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1854, Invalid=5802, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 02:35:47,637 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 88 states. [2020-10-24 02:36:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:36:07,269 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2020-10-24 02:36:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-24 02:36:07,270 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 389 [2020-10-24 02:36:07,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:36:07,273 INFO L225 Difference]: With dead ends: 407 [2020-10-24 02:36:07,273 INFO L226 Difference]: Without dead ends: 403 [2020-10-24 02:36:07,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10703 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=12574, Invalid=33436, Unknown=0, NotChecked=0, Total=46010 [2020-10-24 02:36:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-24 02:36:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-10-24 02:36:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-24 02:36:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-10-24 02:36:07,346 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-10-24 02:36:07,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:36:07,346 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-10-24 02:36:07,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-24 02:36:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-10-24 02:36:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-24 02:36:07,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:36:07,350 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:36:07,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-24 02:36:07,350 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:36:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:36:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1743481540, now seen corresponding path program 42 times [2020-10-24 02:36:07,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:36:07,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089419028] [2020-10-24 02:36:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:36:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:36:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:36:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:36:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:36:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:36:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:36:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:36:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:36:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:36:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:36:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:36:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:36:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:36:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:36:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:36:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:36:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:36:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:36:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:36:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:36:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:36:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:36:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:36:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:36:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:36:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:36:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:36:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:36:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:36:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:36:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:36:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:36:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:36:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:36:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:36:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:36:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:36:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:36:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:36:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:36:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:36:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:36:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:36:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 84 proven. 4389 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-10-24 02:36:13,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089419028] [2020-10-24 02:36:13,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:36:13,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-24 02:36:13,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485887059] [2020-10-24 02:36:13,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-24 02:36:13,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:36:13,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-24 02:36:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1941, Invalid=6069, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 02:36:13,170 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 90 states. [2020-10-24 02:36:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:36:33,833 INFO L93 Difference]: Finished difference Result 416 states and 416 transitions. [2020-10-24 02:36:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-10-24 02:36:33,834 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 398 [2020-10-24 02:36:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:36:33,837 INFO L225 Difference]: With dead ends: 416 [2020-10-24 02:36:33,837 INFO L226 Difference]: Without dead ends: 412 [2020-10-24 02:36:33,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11216 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=13174, Invalid=35006, Unknown=0, NotChecked=0, Total=48180 [2020-10-24 02:36:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-10-24 02:36:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-10-24 02:36:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-24 02:36:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-10-24 02:36:33,907 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-10-24 02:36:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:36:33,908 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-10-24 02:36:33,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-24 02:36:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-10-24 02:36:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-24 02:36:33,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:36:33,912 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:36:33,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-24 02:36:33,912 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:36:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:36:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1562874575, now seen corresponding path program 43 times [2020-10-24 02:36:33,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:36:33,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731322126] [2020-10-24 02:36:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:36:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:36:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:36:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:36:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:36:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:36:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:36:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:36:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:36:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:36:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:36:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:36:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:36:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:36:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:36:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:36:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:36:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:36:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:36:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:36:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:36:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:36:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:36:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:36:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:36:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:36:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:36:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:36:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:36:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:36:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:36:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:36:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:36:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:36:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:36:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:36:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:36:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:36:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:36:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:36:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:36:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:36:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:36:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:36:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:36:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:36:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8299 backedges. 86 proven. 4601 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-10-24 02:36:40,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731322126] [2020-10-24 02:36:40,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:36:40,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-24 02:36:40,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066828634] [2020-10-24 02:36:40,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-24 02:36:40,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:36:40,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-24 02:36:40,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2030, Invalid=6342, Unknown=0, NotChecked=0, Total=8372 [2020-10-24 02:36:40,130 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 92 states. [2020-10-24 02:37:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:37:02,353 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-10-24 02:37:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2020-10-24 02:37:02,354 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 407 [2020-10-24 02:37:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:37:02,357 INFO L225 Difference]: With dead ends: 425 [2020-10-24 02:37:02,357 INFO L226 Difference]: Without dead ends: 421 [2020-10-24 02:37:02,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11741 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=13788, Invalid=36612, Unknown=0, NotChecked=0, Total=50400 [2020-10-24 02:37:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-24 02:37:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-10-24 02:37:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-24 02:37:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-10-24 02:37:02,428 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-10-24 02:37:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:37:02,429 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-10-24 02:37:02,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-10-24 02:37:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-10-24 02:37:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-24 02:37:02,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:37:02,432 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:37:02,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-24 02:37:02,432 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:37:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:37:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash 122497692, now seen corresponding path program 44 times [2020-10-24 02:37:02,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:37:02,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554607227] [2020-10-24 02:37:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:37:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:37:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:37:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:37:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:37:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:37:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:37:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:37:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:37:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:37:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:37:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:37:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:37:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:37:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:37:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:37:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:37:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:37:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:37:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:37:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:37:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:37:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:37:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:37:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:37:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:37:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:37:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:37:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:37:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:37:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:37:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:37:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:37:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:37:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:37:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:37:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:37:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:37:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:37:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:37:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:37:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:37:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:37:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:37:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:37:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:37:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8690 backedges. 88 proven. 4818 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-10-24 02:37:09,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554607227] [2020-10-24 02:37:09,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:37:09,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-10-24 02:37:09,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179592075] [2020-10-24 02:37:09,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-10-24 02:37:09,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:37:09,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-10-24 02:37:09,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2121, Invalid=6621, Unknown=0, NotChecked=0, Total=8742 [2020-10-24 02:37:09,041 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 94 states. [2020-10-24 02:37:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:37:33,639 INFO L93 Difference]: Finished difference Result 434 states and 434 transitions. [2020-10-24 02:37:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2020-10-24 02:37:33,641 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 416 [2020-10-24 02:37:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:37:33,643 INFO L225 Difference]: With dead ends: 434 [2020-10-24 02:37:33,643 INFO L226 Difference]: Without dead ends: 430 [2020-10-24 02:37:33,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12278 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=14416, Invalid=38254, Unknown=0, NotChecked=0, Total=52670 [2020-10-24 02:37:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-24 02:37:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-10-24 02:37:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-24 02:37:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-10-24 02:37:33,699 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-10-24 02:37:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:37:33,700 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-10-24 02:37:33,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-10-24 02:37:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-10-24 02:37:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-24 02:37:33,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:37:33,704 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:37:33,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-24 02:37:33,704 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:37:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:37:33,704 INFO L82 PathProgramCache]: Analyzing trace with hash -414119569, now seen corresponding path program 45 times [2020-10-24 02:37:33,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:37:33,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254035973] [2020-10-24 02:37:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:37:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:37:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:37:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:37:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:37:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:37:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:37:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:37:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:37:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:37:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:37:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:37:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:37:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:37:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:37:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:37:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:37:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:37:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:37:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:37:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:37:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:37:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:37:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:37:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:37:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:37:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:37:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:37:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:37:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:37:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:37:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:37:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:37:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:37:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:37:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:37:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:37:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:37:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:37:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:37:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:37:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:37:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:37:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:37:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:37:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:37:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:37:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:37:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 90 proven. 5040 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-10-24 02:37:41,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254035973] [2020-10-24 02:37:41,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:37:41,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2020-10-24 02:37:41,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310634364] [2020-10-24 02:37:41,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-10-24 02:37:41,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:37:41,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-10-24 02:37:41,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=6906, Unknown=0, NotChecked=0, Total=9120 [2020-10-24 02:37:41,071 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 96 states. [2020-10-24 02:38:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:06,984 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2020-10-24 02:38:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2020-10-24 02:38:06,986 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 425 [2020-10-24 02:38:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:06,989 INFO L225 Difference]: With dead ends: 443 [2020-10-24 02:38:06,989 INFO L226 Difference]: Without dead ends: 439 [2020-10-24 02:38:06,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12827 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=15058, Invalid=39932, Unknown=0, NotChecked=0, Total=54990 [2020-10-24 02:38:06,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-24 02:38:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-10-24 02:38:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-24 02:38:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-10-24 02:38:07,086 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-10-24 02:38:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:07,086 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-10-24 02:38:07,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-10-24 02:38:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-10-24 02:38:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-24 02:38:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:07,090 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:38:07,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-24 02:38:07,090 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1666131964, now seen corresponding path program 46 times [2020-10-24 02:38:07,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:07,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432555297] [2020-10-24 02:38:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:38:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:38:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:38:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:38:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:38:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:38:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:38:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:38:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:38:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:38:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:38:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:38:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:38:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:38:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:38:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:38:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:38:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:38:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:38:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:38:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:38:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:38:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:38:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:38:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:38:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:38:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:38:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:38:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:38:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:38:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:38:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:38:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:38:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:38:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:38:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:38:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:38:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:38:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:38:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:38:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:38:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:38:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:38:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:38:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:38:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:38:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-10-24 02:38:14,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432555297] [2020-10-24 02:38:14,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:38:14,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2020-10-24 02:38:14,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733373294] [2020-10-24 02:38:14,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-10-24 02:38:14,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:14,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-10-24 02:38:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2309, Invalid=7197, Unknown=0, NotChecked=0, Total=9506 [2020-10-24 02:38:14,588 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 98 states. [2020-10-24 02:38:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:41,077 INFO L93 Difference]: Finished difference Result 452 states and 452 transitions. [2020-10-24 02:38:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2020-10-24 02:38:41,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 434 [2020-10-24 02:38:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:41,081 INFO L225 Difference]: With dead ends: 452 [2020-10-24 02:38:41,082 INFO L226 Difference]: Without dead ends: 448 [2020-10-24 02:38:41,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13388 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=15714, Invalid=41646, Unknown=0, NotChecked=0, Total=57360 [2020-10-24 02:38:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-24 02:38:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-10-24 02:38:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-24 02:38:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-10-24 02:38:41,136 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-10-24 02:38:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:41,136 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-10-24 02:38:41,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-10-24 02:38:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-10-24 02:38:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-24 02:38:41,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:41,139 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:38:41,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-24 02:38:41,140 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1396303857, now seen corresponding path program 47 times [2020-10-24 02:38:41,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:41,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861859651] [2020-10-24 02:38:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:38:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:38:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:38:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:38:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:38:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:38:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:38:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:38:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:38:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:38:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:38:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:38:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:38:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:38:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:38:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:38:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:38:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:38:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:38:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:38:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:38:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:38:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:38:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:38:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:38:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:38:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:38:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:38:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:38:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:38:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:38:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:38:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:38:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:38:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:38:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:38:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:38:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:38:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:38:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:38:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:38:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:38:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:38:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:38:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:38:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:38:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:38:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9917 backedges. 94 proven. 5499 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-10-24 02:38:48,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861859651] [2020-10-24 02:38:48,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:38:48,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2020-10-24 02:38:48,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342111374] [2020-10-24 02:38:48,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-10-24 02:38:48,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:48,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-10-24 02:38:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2406, Invalid=7494, Unknown=0, NotChecked=0, Total=9900 [2020-10-24 02:38:48,977 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 100 states. [2020-10-24 02:39:16,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:16,494 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2020-10-24 02:39:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2020-10-24 02:39:16,495 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 443 [2020-10-24 02:39:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:16,498 INFO L225 Difference]: With dead ends: 461 [2020-10-24 02:39:16,498 INFO L226 Difference]: Without dead ends: 457 [2020-10-24 02:39:16,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=16384, Invalid=43396, Unknown=0, NotChecked=0, Total=59780 [2020-10-24 02:39:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-24 02:39:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-10-24 02:39:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-24 02:39:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-10-24 02:39:16,558 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-10-24 02:39:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:16,558 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-10-24 02:39:16,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-10-24 02:39:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-10-24 02:39:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-24 02:39:16,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:16,561 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:39:16,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-24 02:39:16,561 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1550807716, now seen corresponding path program 48 times [2020-10-24 02:39:16,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:16,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068615061] [2020-10-24 02:39:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:39:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:39:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:39:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:39:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:39:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:39:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:39:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:39:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:39:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:39:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:39:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:39:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:39:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:39:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:39:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:39:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:39:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:39:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:39:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:39:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:39:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:39:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:39:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:39:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:39:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:39:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:39:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:39:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:39:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:39:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:39:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:39:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:39:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:39:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:39:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:39:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:39:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:39:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:39:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:39:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:39:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:39:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:39:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:39:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:39:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:39:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:39:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:39:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:39:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:39:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10344 backedges. 96 proven. 5736 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-10-24 02:39:25,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068615061] [2020-10-24 02:39:25,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:39:25,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2020-10-24 02:39:25,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886775188] [2020-10-24 02:39:25,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-10-24 02:39:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:39:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-10-24 02:39:25,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2505, Invalid=7797, Unknown=0, NotChecked=0, Total=10302 [2020-10-24 02:39:25,359 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 102 states. [2020-10-24 02:39:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:39:56,048 INFO L93 Difference]: Finished difference Result 470 states and 470 transitions. [2020-10-24 02:39:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2020-10-24 02:39:56,049 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 452 [2020-10-24 02:39:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:39:56,052 INFO L225 Difference]: With dead ends: 470 [2020-10-24 02:39:56,053 INFO L226 Difference]: Without dead ends: 466 [2020-10-24 02:39:56,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14546 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=17068, Invalid=45182, Unknown=0, NotChecked=0, Total=62250 [2020-10-24 02:39:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-24 02:39:56,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-10-24 02:39:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-24 02:39:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-10-24 02:39:56,134 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-10-24 02:39:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:39:56,135 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-10-24 02:39:56,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-10-24 02:39:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-10-24 02:39:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-24 02:39:56,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:39:56,138 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:39:56,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-24 02:39:56,138 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:39:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:39:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1160724817, now seen corresponding path program 49 times [2020-10-24 02:39:56,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:39:56,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215758187] [2020-10-24 02:39:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:39:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:40:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:40:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:40:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:40:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:40:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:40:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:40:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:40:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:40:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:40:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:40:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:40:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:40:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:40:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:40:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:40:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:40:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:40:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:40:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:40:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:40:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:40:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:40:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:40:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:40:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:40:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:40:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:40:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:40:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:40:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:40:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:40:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:40:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:40:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:40:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:40:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:40:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:40:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:40:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:40:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:40:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:40:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:40:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:40:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:40:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:40:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:40:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:40:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:40:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-24 02:40:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10780 backedges. 98 proven. 5978 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-10-24 02:40:05,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215758187] [2020-10-24 02:40:05,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:40:05,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2020-10-24 02:40:05,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764908193] [2020-10-24 02:40:05,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-10-24 02:40:05,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:40:05,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-10-24 02:40:05,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2606, Invalid=8106, Unknown=0, NotChecked=0, Total=10712 [2020-10-24 02:40:05,715 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 104 states. [2020-10-24 02:40:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:40:38,616 INFO L93 Difference]: Finished difference Result 479 states and 479 transitions. [2020-10-24 02:40:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2020-10-24 02:40:38,633 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 461 [2020-10-24 02:40:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:40:38,635 INFO L225 Difference]: With dead ends: 479 [2020-10-24 02:40:38,635 INFO L226 Difference]: Without dead ends: 475 [2020-10-24 02:40:38,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15143 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=17766, Invalid=47004, Unknown=0, NotChecked=0, Total=64770 [2020-10-24 02:40:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-10-24 02:40:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-10-24 02:40:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-24 02:40:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-10-24 02:40:38,708 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-10-24 02:40:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:40:38,709 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-10-24 02:40:38,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-10-24 02:40:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-10-24 02:40:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-24 02:40:38,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:40:38,713 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:40:38,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-24 02:40:38,713 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:40:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:40:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash 235363004, now seen corresponding path program 50 times [2020-10-24 02:40:38,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:40:38,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325821325] [2020-10-24 02:40:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:40:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:40:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:40:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:40:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:40:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:40:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:40:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:40:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:40:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:40:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:40:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:40:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:40:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:40:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:40:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:40:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:40:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:40:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:40:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:40:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:40:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:40:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:40:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:40:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:40:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:40:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:40:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:40:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:40:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:40:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:40:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:40:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:40:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:40:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:40:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:40:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:40:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:40:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:40:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:40:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:40:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:40:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:40:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:40:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:40:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:40:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:40:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:40:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:40:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:40:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-24 02:40:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:40:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:40:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 100 proven. 6225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-10-24 02:40:48,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325821325] [2020-10-24 02:40:48,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:40:48,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2020-10-24 02:40:48,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787977851] [2020-10-24 02:40:48,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 106 states [2020-10-24 02:40:48,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:40:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2020-10-24 02:40:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2709, Invalid=8421, Unknown=0, NotChecked=0, Total=11130 [2020-10-24 02:40:48,514 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 106 states. [2020-10-24 02:41:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:41:21,637 INFO L93 Difference]: Finished difference Result 488 states and 488 transitions. [2020-10-24 02:41:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2020-10-24 02:41:21,639 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 470 [2020-10-24 02:41:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:41:21,642 INFO L225 Difference]: With dead ends: 488 [2020-10-24 02:41:21,642 INFO L226 Difference]: Without dead ends: 484 [2020-10-24 02:41:21,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15752 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=18478, Invalid=48862, Unknown=0, NotChecked=0, Total=67340 [2020-10-24 02:41:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-24 02:41:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-10-24 02:41:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-24 02:41:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-10-24 02:41:21,718 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-10-24 02:41:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:41:21,718 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-10-24 02:41:21,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 106 states. [2020-10-24 02:41:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-10-24 02:41:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-24 02:41:21,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:41:21,722 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:41:21,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-24 02:41:21,722 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:41:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:41:21,722 INFO L82 PathProgramCache]: Analyzing trace with hash 540736847, now seen corresponding path program 51 times [2020-10-24 02:41:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:41:21,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434740790] [2020-10-24 02:41:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:41:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:41:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:41:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:41:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:41:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:41:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:41:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:41:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:41:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:41:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:41:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:41:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:41:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:41:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:41:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:41:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:41:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:41:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:41:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:41:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:41:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:41:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:41:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:41:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:41:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:41:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:41:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:41:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:41:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:41:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:41:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:41:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:41:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:41:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:41:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:41:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:41:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:41:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:41:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:41:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:41:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:41:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:41:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:41:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:41:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:41:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:41:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:41:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:41:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:41:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-24 02:41:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:41:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-10-24 02:41:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:41:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11679 backedges. 102 proven. 6477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-10-24 02:41:32,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434740790] [2020-10-24 02:41:32,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:41:32,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2020-10-24 02:41:32,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542486950] [2020-10-24 02:41:32,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 108 states [2020-10-24 02:41:32,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:41:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2020-10-24 02:41:32,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2814, Invalid=8742, Unknown=0, NotChecked=0, Total=11556 [2020-10-24 02:41:32,115 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 108 states. [2020-10-24 02:42:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:42:08,009 INFO L93 Difference]: Finished difference Result 497 states and 497 transitions. [2020-10-24 02:42:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2020-10-24 02:42:08,011 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 479 [2020-10-24 02:42:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:42:08,014 INFO L225 Difference]: With dead ends: 497 [2020-10-24 02:42:08,014 INFO L226 Difference]: Without dead ends: 493 [2020-10-24 02:42:08,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16373 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=19204, Invalid=50756, Unknown=0, NotChecked=0, Total=69960 [2020-10-24 02:42:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-24 02:42:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-10-24 02:42:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-24 02:42:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-10-24 02:42:08,094 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-10-24 02:42:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:42:08,095 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-10-24 02:42:08,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 108 states. [2020-10-24 02:42:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-10-24 02:42:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-24 02:42:08,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:42:08,098 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:42:08,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-24 02:42:08,098 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:42:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:42:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1758883812, now seen corresponding path program 52 times [2020-10-24 02:42:08,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:42:08,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82741246] [2020-10-24 02:42:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:42:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:42:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 02:42:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-24 02:42:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:42:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:42:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-24 02:42:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 02:42:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-24 02:42:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-24 02:42:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-24 02:42:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 02:42:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 02:42:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 02:42:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-24 02:42:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 02:42:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-24 02:42:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-24 02:42:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-24 02:42:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-24 02:42:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-24 02:42:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-24 02:42:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-24 02:42:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:42:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-24 02:42:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-24 02:42:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-24 02:42:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-24 02:42:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-24 02:42:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:42:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:42:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-10-24 02:42:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-24 02:42:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-24 02:42:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-10-24 02:42:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-24 02:42:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-24 02:42:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-24 02:42:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-24 02:42:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-24 02:42:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-24 02:42:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-24 02:42:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-24 02:42:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-24 02:42:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-24 02:42:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-24 02:42:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-24 02:42:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-10-24 02:42:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-24 02:42:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-24 02:42:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-10-24 02:42:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-24 02:42:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-10-24 02:42:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-24 02:42:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:42:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12142 backedges. 104 proven. 6734 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2020-10-24 02:42:19,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82741246] [2020-10-24 02:42:19,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:42:19,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2020-10-24 02:42:19,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739597784] [2020-10-24 02:42:19,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-10-24 02:42:19,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:42:19,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-10-24 02:42:19,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2921, Invalid=9069, Unknown=0, NotChecked=0, Total=11990 [2020-10-24 02:42:19,504 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 110 states. [2020-10-24 02:42:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:42:58,919 INFO L93 Difference]: Finished difference Result 506 states and 506 transitions. [2020-10-24 02:42:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2020-10-24 02:42:58,922 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 488 [2020-10-24 02:42:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:42:58,924 INFO L225 Difference]: With dead ends: 506 [2020-10-24 02:42:58,924 INFO L226 Difference]: Without dead ends: 502 [2020-10-24 02:42:58,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17006 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=19944, Invalid=52686, Unknown=0, NotChecked=0, Total=72630 [2020-10-24 02:42:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-24 02:42:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-10-24 02:42:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-10-24 02:42:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-10-24 02:42:59,032 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-10-24 02:42:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:42:59,032 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-10-24 02:42:59,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-10-24 02:42:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-10-24 02:42:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-24 02:42:59,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:42:59,035 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:42:59,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-24 02:42:59,035 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:42:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:42:59,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1924213777, now seen corresponding path program 53 times [2020-10-24 02:42:59,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:42:59,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451331426] [2020-10-24 02:42:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:42:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat