/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:49:45,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:49:45,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:49:45,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:49:45,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:49:45,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:49:45,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:49:45,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:49:45,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:49:45,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:49:45,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:49:45,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:49:45,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:49:45,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:49:45,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:49:45,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:49:45,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:49:45,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:49:45,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:49:45,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:49:45,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:49:45,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:49:45,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:49:45,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:49:45,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:49:45,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:49:45,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:49:45,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:49:45,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:49:46,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:49:46,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:49:46,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:49:46,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:49:46,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:49:46,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:49:46,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:49:46,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:49:46,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:49:46,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:49:46,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:49:46,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:49:46,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:49:46,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:49:46,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:49:46,022 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:49:46,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:49:46,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:49:46,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:49:46,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:49:46,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:49:46,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:49:46,023 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:49:46,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:49:46,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:49:46,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:49:46,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:49:46,435 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:49:46,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-11-07 04:49:46,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7821d30a0/725e95216d28469b8ac191c75346dab0/FLAGa56bc1e3f [2020-11-07 04:49:47,244 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:49:47,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-11-07 04:49:47,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7821d30a0/725e95216d28469b8ac191c75346dab0/FLAGa56bc1e3f [2020-11-07 04:49:47,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7821d30a0/725e95216d28469b8ac191c75346dab0 [2020-11-07 04:49:47,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:49:47,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:49:47,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:49:47,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:49:47,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:49:47,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175e152f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47, skipping insertion in model container [2020-11-07 04:49:47,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:49:47,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:49:47,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:49:47,825 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:49:47,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:49:47,860 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:49:47,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47 WrapperNode [2020-11-07 04:49:47,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:49:47,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:49:47,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:49:47,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:49:47,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... [2020-11-07 04:49:47,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:49:47,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:49:47,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:49:47,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:49:47,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:49:47,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:49:47,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:49:47,989 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:49:47,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-11-07 04:49:47,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-11-07 04:49:47,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:49:47,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:49:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:49:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:49:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:49:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 04:49:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-11-07 04:49:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-11-07 04:49:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:49:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:49:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:49:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:49:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:49:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:49:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:49:48,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:49:48,442 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 04:49:48,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:48 BoogieIcfgContainer [2020-11-07 04:49:48,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:49:48,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:49:48,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:49:48,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:49:48,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:49:47" (1/3) ... [2020-11-07 04:49:48,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dc2ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:48, skipping insertion in model container [2020-11-07 04:49:48,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:49:47" (2/3) ... [2020-11-07 04:49:48,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dc2ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:49:48, skipping insertion in model container [2020-11-07 04:49:48,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:49:48" (3/3) ... [2020-11-07 04:49:48,465 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-11-07 04:49:48,484 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:49:48,487 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:49:48,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:49:48,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:49:48,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:49:48,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:49:48,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:49:48,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:49:48,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:49:48,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:49:48,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:49:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-07 04:49:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 04:49:48,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:48,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:48,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1910946050, now seen corresponding path program 1 times [2020-11-07 04:49:48,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:48,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088571499] [2020-11-07 04:49:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:49,133 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 14 [2020-11-07 04:49:49,276 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 14 [2020-11-07 04:49:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:49:49,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088571499] [2020-11-07 04:49:49,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:49:49,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 04:49:49,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412842559] [2020-11-07 04:49:49,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 04:49:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 04:49:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-07 04:49:49,504 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 10 states. [2020-11-07 04:49:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:50,560 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-11-07 04:49:50,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 04:49:50,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-11-07 04:49:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:50,573 INFO L225 Difference]: With dead ends: 75 [2020-11-07 04:49:50,574 INFO L226 Difference]: Without dead ends: 49 [2020-11-07 04:49:50,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-11-07 04:49:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-07 04:49:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-07 04:49:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-07 04:49:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-07 04:49:50,661 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-11-07 04:49:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:50,663 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-07 04:49:50,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 04:49:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-07 04:49:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 04:49:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:50,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:50,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:49:50,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1953874381, now seen corresponding path program 1 times [2020-11-07 04:49:50,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:50,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963127363] [2020-11-07 04:49:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:51,016 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-11-07 04:49:51,138 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-11-07 04:49:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:49:51,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963127363] [2020-11-07 04:49:51,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:49:51,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 04:49:51,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529599496] [2020-11-07 04:49:51,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 04:49:51,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:51,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 04:49:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-07 04:49:51,266 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 10 states. [2020-11-07 04:49:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:51,968 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-11-07 04:49:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 04:49:51,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-11-07 04:49:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:51,973 INFO L225 Difference]: With dead ends: 59 [2020-11-07 04:49:51,973 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 04:49:51,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-11-07 04:49:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 04:49:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-11-07 04:49:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-07 04:49:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-07 04:49:52,007 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 30 [2020-11-07 04:49:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:52,009 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-07 04:49:52,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 04:49:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-07 04:49:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 04:49:52,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:52,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:52,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:49:52,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:52,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1657503486, now seen corresponding path program 1 times [2020-11-07 04:49:52,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:52,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528909203] [2020-11-07 04:49:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:49:52,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528909203] [2020-11-07 04:49:52,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:49:52,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:49:52,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59661074] [2020-11-07 04:49:52,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:49:52,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:52,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:49:52,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:49:52,146 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-11-07 04:49:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:52,439 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-11-07 04:49:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:49:52,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-07 04:49:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:52,442 INFO L225 Difference]: With dead ends: 71 [2020-11-07 04:49:52,442 INFO L226 Difference]: Without dead ends: 50 [2020-11-07 04:49:52,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 04:49:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-07 04:49:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-07 04:49:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-07 04:49:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-11-07 04:49:52,464 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 38 [2020-11-07 04:49:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:52,464 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-11-07 04:49:52,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:49:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-11-07 04:49:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 04:49:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:52,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:52,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 04:49:52,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash -414272378, now seen corresponding path program 1 times [2020-11-07 04:49:52,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:52,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720378821] [2020-11-07 04:49:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:49:52,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720378821] [2020-11-07 04:49:52,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:49:52,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 04:49:52,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643683114] [2020-11-07 04:49:52,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 04:49:52,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:52,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 04:49:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-11-07 04:49:52,927 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 13 states. [2020-11-07 04:49:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:53,821 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-11-07 04:49:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 04:49:53,822 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-11-07 04:49:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:53,825 INFO L225 Difference]: With dead ends: 63 [2020-11-07 04:49:53,825 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 04:49:53,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-11-07 04:49:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 04:49:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-07 04:49:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-07 04:49:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-11-07 04:49:53,842 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2020-11-07 04:49:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:53,842 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-11-07 04:49:53,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 04:49:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-11-07 04:49:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 04:49:53,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:53,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:53,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 04:49:53,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1350050731, now seen corresponding path program 1 times [2020-11-07 04:49:53,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:53,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514174994] [2020-11-07 04:49:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-07 04:49:53,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514174994] [2020-11-07 04:49:53,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:49:53,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:49:53,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115536214] [2020-11-07 04:49:53,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:49:53,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:53,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:49:53,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:49:53,997 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 6 states. [2020-11-07 04:49:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:54,278 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-11-07 04:49:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:49:54,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-11-07 04:49:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:54,280 INFO L225 Difference]: With dead ends: 73 [2020-11-07 04:49:54,280 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 04:49:54,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 04:49:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 04:49:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-07 04:49:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-07 04:49:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-11-07 04:49:54,293 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 47 [2020-11-07 04:49:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:54,294 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-11-07 04:49:54,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:49:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-11-07 04:49:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 04:49:54,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:54,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:54,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 04:49:54,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1573382430, now seen corresponding path program 1 times [2020-11-07 04:49:54,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:54,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885006032] [2020-11-07 04:49:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:54,520 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 17 [2020-11-07 04:49:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-07 04:49:54,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885006032] [2020-11-07 04:49:54,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:49:54,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 04:49:54,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242460103] [2020-11-07 04:49:54,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 04:49:54,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 04:49:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-11-07 04:49:54,895 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 15 states. [2020-11-07 04:49:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:56,124 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-11-07 04:49:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 04:49:56,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-11-07 04:49:56,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:56,126 INFO L225 Difference]: With dead ends: 72 [2020-11-07 04:49:56,126 INFO L226 Difference]: Without dead ends: 64 [2020-11-07 04:49:56,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-11-07 04:49:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-07 04:49:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-11-07 04:49:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 04:49:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-11-07 04:49:56,153 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 48 [2020-11-07 04:49:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:56,154 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-11-07 04:49:56,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 04:49:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-11-07 04:49:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 04:49:56,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:56,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:56,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 04:49:56,164 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 573615773, now seen corresponding path program 1 times [2020-11-07 04:49:56,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:56,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177768137] [2020-11-07 04:49:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 04:49:56,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177768137] [2020-11-07 04:49:56,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:49:56,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 04:49:56,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655262872] [2020-11-07 04:49:56,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 04:49:56,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 04:49:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-11-07 04:49:56,682 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 16 states. [2020-11-07 04:49:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:49:58,088 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-11-07 04:49:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 04:49:58,088 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-11-07 04:49:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:49:58,091 INFO L225 Difference]: With dead ends: 82 [2020-11-07 04:49:58,091 INFO L226 Difference]: Without dead ends: 74 [2020-11-07 04:49:58,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2020-11-07 04:49:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-07 04:49:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2020-11-07 04:49:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-07 04:49:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-11-07 04:49:58,109 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 57 [2020-11-07 04:49:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:49:58,109 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-11-07 04:49:58,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 04:49:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-11-07 04:49:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 04:49:58,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:49:58,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:49:58,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 04:49:58,111 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:49:58,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:49:58,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1209860087, now seen corresponding path program 2 times [2020-11-07 04:49:58,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:49:58,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855206777] [2020-11-07 04:49:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:49:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:49:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:49:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:49:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:49:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-07 04:49:58,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855206777] [2020-11-07 04:49:58,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:49:58,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-11-07 04:49:58,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575486412] [2020-11-07 04:49:58,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 04:49:58,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:49:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 04:49:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-11-07 04:49:58,789 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 19 states. [2020-11-07 04:50:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:00,656 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-11-07 04:50:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-07 04:50:00,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-11-07 04:50:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:00,659 INFO L225 Difference]: With dead ends: 92 [2020-11-07 04:50:00,660 INFO L226 Difference]: Without dead ends: 84 [2020-11-07 04:50:00,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 04:50:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-07 04:50:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2020-11-07 04:50:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 04:50:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-11-07 04:50:00,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 66 [2020-11-07 04:50:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:00,703 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-11-07 04:50:00,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 04:50:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-11-07 04:50:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-07 04:50:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:00,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:00,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 04:50:00,705 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1746113972, now seen corresponding path program 2 times [2020-11-07 04:50:00,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:00,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424307294] [2020-11-07 04:50:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-07 04:50:01,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424307294] [2020-11-07 04:50:01,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:01,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-11-07 04:50:01,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806795228] [2020-11-07 04:50:01,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-07 04:50:01,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-07 04:50:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-11-07 04:50:01,498 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 21 states. [2020-11-07 04:50:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:03,750 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-11-07 04:50:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-07 04:50:03,750 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-11-07 04:50:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:03,752 INFO L225 Difference]: With dead ends: 102 [2020-11-07 04:50:03,753 INFO L226 Difference]: Without dead ends: 94 [2020-11-07 04:50:03,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2020-11-07 04:50:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-07 04:50:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2020-11-07 04:50:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-07 04:50:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-11-07 04:50:03,786 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 75 [2020-11-07 04:50:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:03,787 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-11-07 04:50:03,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-07 04:50:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-11-07 04:50:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-07 04:50:03,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:03,791 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:03,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 04:50:03,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash -467833588, now seen corresponding path program 3 times [2020-11-07 04:50:03,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:03,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376580952] [2020-11-07 04:50:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,154 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 18 [2020-11-07 04:50:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-11-07 04:50:04,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376580952] [2020-11-07 04:50:04,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:04,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-11-07 04:50:04,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109762710] [2020-11-07 04:50:04,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-07 04:50:04,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:04,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-07 04:50:04,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-11-07 04:50:04,756 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 23 states. [2020-11-07 04:50:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:07,380 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-11-07 04:50:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-07 04:50:07,380 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-11-07 04:50:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:07,381 INFO L225 Difference]: With dead ends: 112 [2020-11-07 04:50:07,382 INFO L226 Difference]: Without dead ends: 104 [2020-11-07 04:50:07,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 04:50:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-07 04:50:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 77. [2020-11-07 04:50:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 04:50:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-11-07 04:50:07,410 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 84 [2020-11-07 04:50:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:07,410 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-11-07 04:50:07,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-07 04:50:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-11-07 04:50:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-07 04:50:07,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:07,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:07,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 04:50:07,413 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:07,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1199621685, now seen corresponding path program 3 times [2020-11-07 04:50:07,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:07,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306693273] [2020-11-07 04:50:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:08,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-07 04:50:08,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306693273] [2020-11-07 04:50:08,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:08,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-11-07 04:50:08,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283998640] [2020-11-07 04:50:08,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-07 04:50:08,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:08,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-07 04:50:08,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-11-07 04:50:08,362 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 25 states. [2020-11-07 04:50:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:11,314 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-11-07 04:50:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-07 04:50:11,314 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 93 [2020-11-07 04:50:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:11,316 INFO L225 Difference]: With dead ends: 122 [2020-11-07 04:50:11,316 INFO L226 Difference]: Without dead ends: 114 [2020-11-07 04:50:11,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=252, Invalid=2718, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 04:50:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-07 04:50:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 82. [2020-11-07 04:50:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-07 04:50:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-11-07 04:50:11,341 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 93 [2020-11-07 04:50:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:11,342 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-11-07 04:50:11,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-07 04:50:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-11-07 04:50:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-07 04:50:11,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:11,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:11,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 04:50:11,343 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1529499169, now seen corresponding path program 4 times [2020-11-07 04:50:11,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:11,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305075928] [2020-11-07 04:50:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-07 04:50:12,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305075928] [2020-11-07 04:50:12,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:12,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-11-07 04:50:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047211890] [2020-11-07 04:50:12,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-07 04:50:12,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-07 04:50:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-11-07 04:50:12,397 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 27 states. [2020-11-07 04:50:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:15,835 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-11-07 04:50:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 04:50:15,836 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2020-11-07 04:50:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:15,837 INFO L225 Difference]: With dead ends: 132 [2020-11-07 04:50:15,837 INFO L226 Difference]: Without dead ends: 124 [2020-11-07 04:50:15,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=277, Invalid=3263, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 04:50:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-07 04:50:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 87. [2020-11-07 04:50:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 04:50:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-11-07 04:50:15,864 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 102 [2020-11-07 04:50:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:15,864 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-11-07 04:50:15,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-07 04:50:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-11-07 04:50:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-07 04:50:15,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:15,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:15,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 04:50:15,866 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash 580086498, now seen corresponding path program 4 times [2020-11-07 04:50:15,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:15,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156508982] [2020-11-07 04:50:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-07 04:50:17,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156508982] [2020-11-07 04:50:17,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-11-07 04:50:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864497892] [2020-11-07 04:50:17,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-07 04:50:17,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-07 04:50:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-11-07 04:50:17,041 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 29 states. [2020-11-07 04:50:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:21,133 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-11-07 04:50:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-07 04:50:21,133 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 111 [2020-11-07 04:50:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:21,135 INFO L225 Difference]: With dead ends: 142 [2020-11-07 04:50:21,135 INFO L226 Difference]: Without dead ends: 134 [2020-11-07 04:50:21,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=302, Invalid=3858, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 04:50:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-07 04:50:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2020-11-07 04:50:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-07 04:50:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-11-07 04:50:21,162 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 111 [2020-11-07 04:50:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:21,163 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-11-07 04:50:21,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-07 04:50:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-11-07 04:50:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-07 04:50:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:21,164 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:21,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 04:50:21,165 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1842572490, now seen corresponding path program 5 times [2020-11-07 04:50:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:21,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152129901] [2020-11-07 04:50:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-11-07 04:50:22,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152129901] [2020-11-07 04:50:22,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:22,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-11-07 04:50:22,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390085723] [2020-11-07 04:50:22,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-07 04:50:22,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:22,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-07 04:50:22,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-11-07 04:50:22,506 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 31 states. [2020-11-07 04:50:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:26,947 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-11-07 04:50:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-07 04:50:26,949 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 120 [2020-11-07 04:50:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:26,951 INFO L225 Difference]: With dead ends: 152 [2020-11-07 04:50:26,951 INFO L226 Difference]: Without dead ends: 144 [2020-11-07 04:50:26,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=327, Invalid=4503, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 04:50:26,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-07 04:50:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 97. [2020-11-07 04:50:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-07 04:50:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-11-07 04:50:26,989 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 120 [2020-11-07 04:50:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:26,989 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-11-07 04:50:26,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-07 04:50:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-11-07 04:50:26,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-07 04:50:26,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:26,991 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:26,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 04:50:26,992 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:26,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash 403175673, now seen corresponding path program 5 times [2020-11-07 04:50:26,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:26,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067405362] [2020-11-07 04:50:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:28,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:28,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-11-07 04:50:28,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067405362] [2020-11-07 04:50:28,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:28,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-11-07 04:50:28,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118038854] [2020-11-07 04:50:28,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-07 04:50:28,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-07 04:50:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=990, Unknown=0, NotChecked=0, Total=1056 [2020-11-07 04:50:28,450 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 33 states. [2020-11-07 04:50:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:33,656 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-11-07 04:50:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-07 04:50:33,656 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 129 [2020-11-07 04:50:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:33,659 INFO L225 Difference]: With dead ends: 162 [2020-11-07 04:50:33,659 INFO L226 Difference]: Without dead ends: 154 [2020-11-07 04:50:33,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=352, Invalid=5198, Unknown=0, NotChecked=0, Total=5550 [2020-11-07 04:50:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-07 04:50:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 102. [2020-11-07 04:50:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-07 04:50:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-11-07 04:50:33,705 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 129 [2020-11-07 04:50:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:33,706 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-11-07 04:50:33,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-07 04:50:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-11-07 04:50:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-07 04:50:33,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:33,707 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:33,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 04:50:33,708 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash 117779531, now seen corresponding path program 6 times [2020-11-07 04:50:33,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:33,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80734835] [2020-11-07 04:50:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,028 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:50:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:34,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:35,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-07 04:50:35,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80734835] [2020-11-07 04:50:35,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:35,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-11-07 04:50:35,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925111215] [2020-11-07 04:50:35,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-07 04:50:35,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:35,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-07 04:50:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1120, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 04:50:35,511 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 35 states. [2020-11-07 04:50:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:41,382 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-11-07 04:50:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-07 04:50:41,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 138 [2020-11-07 04:50:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:41,384 INFO L225 Difference]: With dead ends: 172 [2020-11-07 04:50:41,384 INFO L226 Difference]: Without dead ends: 164 [2020-11-07 04:50:41,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=377, Invalid=5943, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 04:50:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-07 04:50:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 107. [2020-11-07 04:50:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 04:50:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-11-07 04:50:41,435 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 138 [2020-11-07 04:50:41,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:41,436 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-11-07 04:50:41,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-07 04:50:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-11-07 04:50:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-07 04:50:41,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:41,437 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:41,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 04:50:41,438 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1070812144, now seen corresponding path program 6 times [2020-11-07 04:50:41,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:41,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824124370] [2020-11-07 04:50:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-11-07 04:50:43,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824124370] [2020-11-07 04:50:43,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:43,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 04:50:43,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025111170] [2020-11-07 04:50:43,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 04:50:43,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:43,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 04:50:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1190, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 04:50:43,176 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 36 states. [2020-11-07 04:50:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:49,636 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-11-07 04:50:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-07 04:50:49,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 147 [2020-11-07 04:50:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:49,639 INFO L225 Difference]: With dead ends: 182 [2020-11-07 04:50:49,639 INFO L226 Difference]: Without dead ends: 174 [2020-11-07 04:50:49,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=386, Invalid=6420, Unknown=0, NotChecked=0, Total=6806 [2020-11-07 04:50:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-07 04:50:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 112. [2020-11-07 04:50:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-07 04:50:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-11-07 04:50:49,698 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 147 [2020-11-07 04:50:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:49,699 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-11-07 04:50:49,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 04:50:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-11-07 04:50:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-07 04:50:49,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:49,700 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:49,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 04:50:49,700 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1770850656, now seen corresponding path program 7 times [2020-11-07 04:50:49,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:49,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80005171] [2020-11-07 04:50:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,000 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:50:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:50,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:51,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:51,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-11-07 04:50:51,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80005171] [2020-11-07 04:50:51,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:50:51,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-11-07 04:50:51,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114459285] [2020-11-07 04:50:51,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-07 04:50:51,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:50:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-07 04:50:51,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1404, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 04:50:51,718 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 39 states. [2020-11-07 04:50:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:50:58,718 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-11-07 04:50:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-07 04:50:58,719 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 156 [2020-11-07 04:50:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:50:58,720 INFO L225 Difference]: With dead ends: 192 [2020-11-07 04:50:58,720 INFO L226 Difference]: Without dead ends: 184 [2020-11-07 04:50:58,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=427, Invalid=7583, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 04:50:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-07 04:50:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 117. [2020-11-07 04:50:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-07 04:50:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-11-07 04:50:58,777 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 156 [2020-11-07 04:50:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:50:58,778 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-11-07 04:50:58,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-07 04:50:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-11-07 04:50:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-07 04:50:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:50:58,779 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:50:58,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 04:50:58,779 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:50:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:50:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1256811559, now seen corresponding path program 7 times [2020-11-07 04:50:58,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:50:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024141139] [2020-11-07 04:50:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:50:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:50:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:50:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:50:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:50:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-11-07 04:51:00,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024141139] [2020-11-07 04:51:00,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:00,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-11-07 04:51:00,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182004452] [2020-11-07 04:51:00,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-07 04:51:00,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:00,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-07 04:51:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1558, Unknown=0, NotChecked=0, Total=1640 [2020-11-07 04:51:00,958 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 41 states. [2020-11-07 04:51:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:08,784 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-11-07 04:51:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-07 04:51:08,785 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 165 [2020-11-07 04:51:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:08,787 INFO L225 Difference]: With dead ends: 202 [2020-11-07 04:51:08,787 INFO L226 Difference]: Without dead ends: 194 [2020-11-07 04:51:08,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=452, Invalid=8478, Unknown=0, NotChecked=0, Total=8930 [2020-11-07 04:51:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-07 04:51:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 122. [2020-11-07 04:51:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-07 04:51:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-11-07 04:51:08,854 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 165 [2020-11-07 04:51:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:08,854 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-11-07 04:51:08,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-07 04:51:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-11-07 04:51:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-07 04:51:08,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:08,856 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:51:08,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 04:51:08,856 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 882186869, now seen corresponding path program 8 times [2020-11-07 04:51:08,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:08,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809176584] [2020-11-07 04:51:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-11-07 04:51:11,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809176584] [2020-11-07 04:51:11,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:11,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-11-07 04:51:11,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693003769] [2020-11-07 04:51:11,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-07 04:51:11,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-07 04:51:11,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1720, Unknown=0, NotChecked=0, Total=1806 [2020-11-07 04:51:11,523 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 43 states. [2020-11-07 04:51:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:20,232 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-11-07 04:51:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-07 04:51:20,238 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 174 [2020-11-07 04:51:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:20,240 INFO L225 Difference]: With dead ends: 212 [2020-11-07 04:51:20,240 INFO L226 Difference]: Without dead ends: 204 [2020-11-07 04:51:20,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1758 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=477, Invalid=9423, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 04:51:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-11-07 04:51:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2020-11-07 04:51:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-07 04:51:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-11-07 04:51:20,349 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 174 [2020-11-07 04:51:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:20,350 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-11-07 04:51:20,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-07 04:51:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-11-07 04:51:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-07 04:51:20,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:20,352 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:51:20,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 04:51:20,352 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:20,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1136521534, now seen corresponding path program 8 times [2020-11-07 04:51:20,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:20,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456671289] [2020-11-07 04:51:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-07 04:51:23,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456671289] [2020-11-07 04:51:23,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:23,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 04:51:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126792047] [2020-11-07 04:51:23,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 04:51:23,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:23,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 04:51:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 04:51:23,099 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 44 states. [2020-11-07 04:51:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:32,779 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-11-07 04:51:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-07 04:51:32,779 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 183 [2020-11-07 04:51:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:32,781 INFO L225 Difference]: With dead ends: 222 [2020-11-07 04:51:32,781 INFO L226 Difference]: Without dead ends: 214 [2020-11-07 04:51:32,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=486, Invalid=10020, Unknown=0, NotChecked=0, Total=10506 [2020-11-07 04:51:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-07 04:51:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 132. [2020-11-07 04:51:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-07 04:51:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2020-11-07 04:51:32,894 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 183 [2020-11-07 04:51:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:32,894 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2020-11-07 04:51:32,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 04:51:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2020-11-07 04:51:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-07 04:51:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:32,896 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:51:32,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 04:51:32,896 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1189498762, now seen corresponding path program 9 times [2020-11-07 04:51:32,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:32,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184381225] [2020-11-07 04:51:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,098 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:51:33,219 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:51:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-11-07 04:51:36,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184381225] [2020-11-07 04:51:36,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:36,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-11-07 04:51:36,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136445054] [2020-11-07 04:51:36,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-07 04:51:36,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:36,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-07 04:51:36,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=2068, Unknown=0, NotChecked=0, Total=2162 [2020-11-07 04:51:36,042 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand 47 states. [2020-11-07 04:51:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:51:46,762 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-11-07 04:51:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-07 04:51:46,763 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 192 [2020-11-07 04:51:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:51:46,766 INFO L225 Difference]: With dead ends: 232 [2020-11-07 04:51:46,766 INFO L226 Difference]: Without dead ends: 224 [2020-11-07 04:51:46,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=527, Invalid=11463, Unknown=0, NotChecked=0, Total=11990 [2020-11-07 04:51:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-07 04:51:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 137. [2020-11-07 04:51:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-07 04:51:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-11-07 04:51:46,872 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 192 [2020-11-07 04:51:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:51:46,873 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-11-07 04:51:46,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-07 04:51:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-11-07 04:51:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-11-07 04:51:46,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:51:46,874 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:51:46,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 04:51:46,875 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:51:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:51:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -457043115, now seen corresponding path program 9 times [2020-11-07 04:51:46,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:51:46,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32790056] [2020-11-07 04:51:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:51:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:51:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:51:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:49,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:51:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:51:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-11-07 04:51:50,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32790056] [2020-11-07 04:51:50,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:51:50,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-11-07 04:51:50,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921246920] [2020-11-07 04:51:50,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-07 04:51:50,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:51:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-07 04:51:50,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2254, Unknown=0, NotChecked=0, Total=2352 [2020-11-07 04:51:50,224 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 49 states. [2020-11-07 04:52:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:52:01,737 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-11-07 04:52:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-07 04:52:01,737 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 201 [2020-11-07 04:52:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:52:01,739 INFO L225 Difference]: With dead ends: 242 [2020-11-07 04:52:01,739 INFO L226 Difference]: Without dead ends: 234 [2020-11-07 04:52:01,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=552, Invalid=12558, Unknown=0, NotChecked=0, Total=13110 [2020-11-07 04:52:01,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-07 04:52:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 142. [2020-11-07 04:52:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-07 04:52:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2020-11-07 04:52:01,854 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 201 [2020-11-07 04:52:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:52:01,855 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2020-11-07 04:52:01,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-07 04:52:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2020-11-07 04:52:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-07 04:52:01,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:52:01,857 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:52:01,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 04:52:01,857 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:52:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:52:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2084673695, now seen corresponding path program 10 times [2020-11-07 04:52:01,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:52:01,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497960062] [2020-11-07 04:52:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:52:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:52:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:52:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-11-07 04:52:05,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497960062] [2020-11-07 04:52:05,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:52:05,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-11-07 04:52:05,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116146968] [2020-11-07 04:52:05,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-07 04:52:05,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:52:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-07 04:52:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=2448, Unknown=0, NotChecked=0, Total=2550 [2020-11-07 04:52:05,614 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 51 states. [2020-11-07 04:52:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:52:18,221 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-11-07 04:52:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-11-07 04:52:18,222 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 210 [2020-11-07 04:52:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:52:18,225 INFO L225 Difference]: With dead ends: 252 [2020-11-07 04:52:18,225 INFO L226 Difference]: Without dead ends: 244 [2020-11-07 04:52:18,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=577, Invalid=13703, Unknown=0, NotChecked=0, Total=14280 [2020-11-07 04:52:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-11-07 04:52:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 147. [2020-11-07 04:52:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-07 04:52:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-11-07 04:52:18,443 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 210 [2020-11-07 04:52:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:52:18,444 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-11-07 04:52:18,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-07 04:52:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-11-07 04:52:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-07 04:52:18,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:52:18,445 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:52:18,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 04:52:18,446 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:52:18,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:52:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1772462700, now seen corresponding path program 10 times [2020-11-07 04:52:18,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:52:18,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091819288] [2020-11-07 04:52:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:52:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:52:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:52:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:19,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:21,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-11-07 04:52:22,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091819288] [2020-11-07 04:52:22,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:52:22,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-11-07 04:52:22,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724065036] [2020-11-07 04:52:22,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 04:52:22,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:52:22,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 04:52:22,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=2550, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 04:52:22,505 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 52 states. [2020-11-07 04:52:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:52:36,399 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-11-07 04:52:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-11-07 04:52:36,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 219 [2020-11-07 04:52:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:52:36,401 INFO L225 Difference]: With dead ends: 262 [2020-11-07 04:52:36,402 INFO L226 Difference]: Without dead ends: 254 [2020-11-07 04:52:36,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=586, Invalid=14420, Unknown=0, NotChecked=0, Total=15006 [2020-11-07 04:52:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-07 04:52:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 152. [2020-11-07 04:52:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-07 04:52:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2020-11-07 04:52:36,623 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 219 [2020-11-07 04:52:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:52:36,624 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2020-11-07 04:52:36,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 04:52:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2020-11-07 04:52:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-07 04:52:36,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:52:36,627 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:52:36,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 04:52:36,627 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:52:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:52:36,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1180689844, now seen corresponding path program 11 times [2020-11-07 04:52:36,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:52:36,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804849787] [2020-11-07 04:52:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:52:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:36,871 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:52:37,011 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:52:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:52:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:52:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:39,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:40,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-11-07 04:52:41,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804849787] [2020-11-07 04:52:41,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:52:41,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-11-07 04:52:41,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393877018] [2020-11-07 04:52:41,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-07 04:52:41,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:52:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-07 04:52:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2860, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 04:52:41,258 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 55 states. [2020-11-07 04:52:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:52:56,109 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2020-11-07 04:52:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-11-07 04:52:56,110 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 228 [2020-11-07 04:52:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:52:56,113 INFO L225 Difference]: With dead ends: 272 [2020-11-07 04:52:56,113 INFO L226 Difference]: Without dead ends: 264 [2020-11-07 04:52:56,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=627, Invalid=16143, Unknown=0, NotChecked=0, Total=16770 [2020-11-07 04:52:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-11-07 04:52:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 157. [2020-11-07 04:52:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-07 04:52:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2020-11-07 04:52:56,303 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 228 [2020-11-07 04:52:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:52:56,303 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2020-11-07 04:52:56,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-07 04:52:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2020-11-07 04:52:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-11-07 04:52:56,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:52:56,305 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:52:56,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 04:52:56,306 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:52:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:52:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1655729795, now seen corresponding path program 11 times [2020-11-07 04:52:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:52:56,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503037752] [2020-11-07 04:52:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:52:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:52:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:52:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:56,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:58,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:52:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:52:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-11-07 04:53:01,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503037752] [2020-11-07 04:53:01,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:53:01,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-11-07 04:53:01,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390097380] [2020-11-07 04:53:01,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-11-07 04:53:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:53:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-11-07 04:53:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=3078, Unknown=0, NotChecked=0, Total=3192 [2020-11-07 04:53:01,173 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 57 states. [2020-11-07 04:53:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:53:17,718 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2020-11-07 04:53:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-11-07 04:53:17,718 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 237 [2020-11-07 04:53:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:53:17,720 INFO L225 Difference]: With dead ends: 282 [2020-11-07 04:53:17,720 INFO L226 Difference]: Without dead ends: 274 [2020-11-07 04:53:17,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3228 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=652, Invalid=17438, Unknown=0, NotChecked=0, Total=18090 [2020-11-07 04:53:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-07 04:53:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 162. [2020-11-07 04:53:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-07 04:53:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-11-07 04:53:17,921 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 237 [2020-11-07 04:53:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:53:17,922 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-11-07 04:53:17,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-11-07 04:53:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-11-07 04:53:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-11-07 04:53:17,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:53:17,923 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:53:17,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 04:53:17,923 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:53:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:53:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1173497545, now seen corresponding path program 12 times [2020-11-07 04:53:17,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:53:17,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739034861] [2020-11-07 04:53:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:53:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,136 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:53:18,264 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:53:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:53:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:53:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:20,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:21,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-11-07 04:53:23,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739034861] [2020-11-07 04:53:23,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:53:23,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-11-07 04:53:23,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337924611] [2020-11-07 04:53:23,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-11-07 04:53:23,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:53:23,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-11-07 04:53:23,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=3304, Unknown=0, NotChecked=0, Total=3422 [2020-11-07 04:53:23,268 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 59 states. [2020-11-07 04:53:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:53:40,527 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2020-11-07 04:53:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-11-07 04:53:40,527 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 246 [2020-11-07 04:53:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:53:40,530 INFO L225 Difference]: With dead ends: 292 [2020-11-07 04:53:40,530 INFO L226 Difference]: Without dead ends: 284 [2020-11-07 04:53:40,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3474 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=677, Invalid=18783, Unknown=0, NotChecked=0, Total=19460 [2020-11-07 04:53:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-11-07 04:53:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 167. [2020-11-07 04:53:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-07 04:53:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2020-11-07 04:53:40,719 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 246 [2020-11-07 04:53:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:53:40,719 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2020-11-07 04:53:40,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-11-07 04:53:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2020-11-07 04:53:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-07 04:53:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:53:40,721 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:53:40,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 04:53:40,721 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:53:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:53:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash 130172826, now seen corresponding path program 12 times [2020-11-07 04:53:40,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:53:40,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223427525] [2020-11-07 04:53:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:53:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:53:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:53:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:44,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:53:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:53:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 0 proven. 744 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-07 04:53:46,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223427525] [2020-11-07 04:53:46,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:53:46,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-11-07 04:53:46,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369300179] [2020-11-07 04:53:46,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 04:53:46,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:53:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 04:53:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=3422, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 04:53:46,160 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 60 states. [2020-11-07 04:54:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:54:04,373 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2020-11-07 04:54:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-11-07 04:54:04,373 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 255 [2020-11-07 04:54:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:54:04,376 INFO L225 Difference]: With dead ends: 302 [2020-11-07 04:54:04,376 INFO L226 Difference]: Without dead ends: 294 [2020-11-07 04:54:04,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3379 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=686, Invalid=19620, Unknown=0, NotChecked=0, Total=20306 [2020-11-07 04:54:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-11-07 04:54:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 172. [2020-11-07 04:54:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-07 04:54:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2020-11-07 04:54:04,600 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 255 [2020-11-07 04:54:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:54:04,600 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2020-11-07 04:54:04,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 04:54:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2020-11-07 04:54:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-11-07 04:54:04,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:54:04,601 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:54:04,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 04:54:04,602 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:54:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:54:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash -475968546, now seen corresponding path program 13 times [2020-11-07 04:54:04,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:54:04,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564161728] [2020-11-07 04:54:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:54:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:04,835 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:54:04,968 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:54:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:54:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:54:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:09,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 806 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-11-07 04:54:10,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564161728] [2020-11-07 04:54:10,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:54:10,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-11-07 04:54:10,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680144736] [2020-11-07 04:54:10,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-07 04:54:10,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:54:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-07 04:54:10,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=3780, Unknown=0, NotChecked=0, Total=3906 [2020-11-07 04:54:10,741 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 63 states. [2020-11-07 04:54:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:54:31,711 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2020-11-07 04:54:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-11-07 04:54:31,713 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 264 [2020-11-07 04:54:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:54:31,715 INFO L225 Difference]: With dead ends: 312 [2020-11-07 04:54:31,715 INFO L226 Difference]: Without dead ends: 304 [2020-11-07 04:54:31,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3993 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=727, Invalid=21623, Unknown=0, NotChecked=0, Total=22350 [2020-11-07 04:54:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-07 04:54:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 177. [2020-11-07 04:54:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-07 04:54:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2020-11-07 04:54:31,964 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 264 [2020-11-07 04:54:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:54:31,964 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2020-11-07 04:54:31,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-11-07 04:54:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2020-11-07 04:54:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-11-07 04:54:31,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:54:31,966 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:54:31,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 04:54:31,966 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:54:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:54:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1957495375, now seen corresponding path program 13 times [2020-11-07 04:54:31,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:54:31,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303990000] [2020-11-07 04:54:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:54:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:54:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:54:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:34,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:35,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:37,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:54:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:54:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-07 04:54:38,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303990000] [2020-11-07 04:54:38,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:54:38,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-11-07 04:54:38,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028197928] [2020-11-07 04:54:38,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 04:54:38,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:54:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 04:54:38,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=3906, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 04:54:38,919 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 64 states. [2020-11-07 04:55:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:55:00,599 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2020-11-07 04:55:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-11-07 04:55:00,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 273 [2020-11-07 04:55:00,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:55:00,601 INFO L225 Difference]: With dead ends: 322 [2020-11-07 04:55:00,601 INFO L226 Difference]: Without dead ends: 314 [2020-11-07 04:55:00,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3890 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=736, Invalid=22520, Unknown=0, NotChecked=0, Total=23256 [2020-11-07 04:55:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-11-07 04:55:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 182. [2020-11-07 04:55:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-07 04:55:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2020-11-07 04:55:01,061 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 273 [2020-11-07 04:55:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:55:01,062 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2020-11-07 04:55:01,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 04:55:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2020-11-07 04:55:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-11-07 04:55:01,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:55:01,064 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:55:01,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 04:55:01,065 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:55:01,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:55:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -384940813, now seen corresponding path program 14 times [2020-11-07 04:55:01,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:55:01,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011733520] [2020-11-07 04:55:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:55:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,323 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:55:01,461 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:55:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:55:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:55:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 0 proven. 938 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-11-07 04:55:08,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011733520] [2020-11-07 04:55:08,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:55:08,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-11-07 04:55:08,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674466353] [2020-11-07 04:55:08,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-11-07 04:55:08,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:55:08,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-11-07 04:55:08,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=4288, Unknown=0, NotChecked=0, Total=4422 [2020-11-07 04:55:08,495 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 67 states. [2020-11-07 04:55:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:55:32,023 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2020-11-07 04:55:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-11-07 04:55:32,025 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 282 [2020-11-07 04:55:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:55:32,027 INFO L225 Difference]: With dead ends: 332 [2020-11-07 04:55:32,027 INFO L226 Difference]: Without dead ends: 324 [2020-11-07 04:55:32,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4548 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=777, Invalid=24663, Unknown=0, NotChecked=0, Total=25440 [2020-11-07 04:55:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-07 04:55:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 187. [2020-11-07 04:55:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 04:55:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2020-11-07 04:55:32,451 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 282 [2020-11-07 04:55:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:55:32,451 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2020-11-07 04:55:32,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-11-07 04:55:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2020-11-07 04:55:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-11-07 04:55:32,453 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:55:32,454 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:55:32,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 04:55:32,454 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:55:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:55:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1836212424, now seen corresponding path program 14 times [2020-11-07 04:55:32,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:55:32,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354017263] [2020-11-07 04:55:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:55:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:32,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:55:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:55:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:55:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:55:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-11-07 04:55:40,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354017263] [2020-11-07 04:55:40,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:55:40,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-11-07 04:55:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389309630] [2020-11-07 04:55:40,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-11-07 04:55:40,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:55:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-11-07 04:55:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=4554, Unknown=0, NotChecked=0, Total=4692 [2020-11-07 04:55:40,733 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 69 states. [2020-11-07 04:56:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:56:05,534 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2020-11-07 04:56:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-11-07 04:56:05,534 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 291 [2020-11-07 04:56:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:56:05,538 INFO L225 Difference]: With dead ends: 342 [2020-11-07 04:56:05,538 INFO L226 Difference]: Without dead ends: 334 [2020-11-07 04:56:05,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4839 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=802, Invalid=26258, Unknown=0, NotChecked=0, Total=27060 [2020-11-07 04:56:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-07 04:56:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 192. [2020-11-07 04:56:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-07 04:56:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 194 transitions. [2020-11-07 04:56:05,881 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 194 transitions. Word has length 291 [2020-11-07 04:56:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:56:05,881 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 194 transitions. [2020-11-07 04:56:05,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-11-07 04:56:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 194 transitions. [2020-11-07 04:56:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-11-07 04:56:05,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:56:05,883 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:56:05,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 04:56:05,884 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:56:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:56:05,884 INFO L82 PathProgramCache]: Analyzing trace with hash 433193480, now seen corresponding path program 15 times [2020-11-07 04:56:05,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:56:05,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591498543] [2020-11-07 04:56:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:56:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,142 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:56:06,289 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:56:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:56:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:56:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:09,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:12,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-11-07 04:56:14,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591498543] [2020-11-07 04:56:14,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:56:14,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-11-07 04:56:14,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570429949] [2020-11-07 04:56:14,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-11-07 04:56:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:56:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-11-07 04:56:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=4828, Unknown=0, NotChecked=0, Total=4970 [2020-11-07 04:56:14,669 INFO L87 Difference]: Start difference. First operand 192 states and 194 transitions. Second operand 71 states. [2020-11-07 04:56:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:56:41,599 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2020-11-07 04:56:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-11-07 04:56:41,600 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 300 [2020-11-07 04:56:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:56:41,602 INFO L225 Difference]: With dead ends: 352 [2020-11-07 04:56:41,602 INFO L226 Difference]: Without dead ends: 344 [2020-11-07 04:56:41,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5139 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=827, Invalid=27903, Unknown=0, NotChecked=0, Total=28730 [2020-11-07 04:56:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-11-07 04:56:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 197. [2020-11-07 04:56:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-11-07 04:56:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2020-11-07 04:56:41,940 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 300 [2020-11-07 04:56:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:56:41,941 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2020-11-07 04:56:41,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-11-07 04:56:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2020-11-07 04:56:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-11-07 04:56:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:56:41,943 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:56:41,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 04:56:41,944 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:56:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:56:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash -825736993, now seen corresponding path program 15 times [2020-11-07 04:56:41,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:56:41,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958820232] [2020-11-07 04:56:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:56:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:56:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:56:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:45,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:56:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:56:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-11-07 04:56:51,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958820232] [2020-11-07 04:56:51,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:56:51,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-11-07 04:56:51,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004194892] [2020-11-07 04:56:51,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-07 04:56:51,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:56:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-07 04:56:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=5110, Unknown=0, NotChecked=0, Total=5256 [2020-11-07 04:56:51,559 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 73 states. [2020-11-07 04:57:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:57:20,756 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2020-11-07 04:57:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-11-07 04:57:20,757 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 309 [2020-11-07 04:57:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:57:20,760 INFO L225 Difference]: With dead ends: 362 [2020-11-07 04:57:20,760 INFO L226 Difference]: Without dead ends: 354 [2020-11-07 04:57:20,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5448 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=852, Invalid=29598, Unknown=0, NotChecked=0, Total=30450 [2020-11-07 04:57:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-07 04:57:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 202. [2020-11-07 04:57:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-07 04:57:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2020-11-07 04:57:21,203 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 309 [2020-11-07 04:57:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:57:21,203 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2020-11-07 04:57:21,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-07 04:57:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2020-11-07 04:57:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-11-07 04:57:21,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:57:21,207 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:57:21,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 04:57:21,207 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:57:21,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:57:21,207 INFO L82 PathProgramCache]: Analyzing trace with hash -864193763, now seen corresponding path program 16 times [2020-11-07 04:57:21,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:57:21,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578449540] [2020-11-07 04:57:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:57:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:21,490 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:57:21,638 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 04:57:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:57:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:57:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:24,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:57:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:57:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2240 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-11-07 04:57:31,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578449540] [2020-11-07 04:57:31,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:57:31,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-11-07 04:57:31,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164401497] [2020-11-07 04:57:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-07 04:57:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:57:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-07 04:57:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=5400, Unknown=0, NotChecked=0, Total=5550 [2020-11-07 04:57:31,561 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 75 states. [2020-11-07 04:58:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:58:03,135 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2020-11-07 04:58:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-11-07 04:58:03,137 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 318 [2020-11-07 04:58:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:58:03,139 INFO L225 Difference]: With dead ends: 372 [2020-11-07 04:58:03,140 INFO L226 Difference]: Without dead ends: 364 [2020-11-07 04:58:03,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5766 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=877, Invalid=31343, Unknown=0, NotChecked=0, Total=32220 [2020-11-07 04:58:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-11-07 04:58:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 207. [2020-11-07 04:58:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-07 04:58:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2020-11-07 04:58:03,571 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 318 [2020-11-07 04:58:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:58:03,572 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2020-11-07 04:58:03,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-07 04:58:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2020-11-07 04:58:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-11-07 04:58:03,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:58:03,574 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:58:03,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 04:58:03,575 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:58:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:58:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1013682698, now seen corresponding path program 16 times [2020-11-07 04:58:03,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:58:03,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111490948] [2020-11-07 04:58:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:58:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:58:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:58:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:10,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2384 backedges. 0 proven. 1312 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-11-07 04:58:15,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111490948] [2020-11-07 04:58:15,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:58:15,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-11-07 04:58:15,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998356007] [2020-11-07 04:58:15,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 04:58:15,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:58:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 04:58:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=5550, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 04:58:15,460 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 76 states. [2020-11-07 04:58:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:58:51,900 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2020-11-07 04:58:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-11-07 04:58:51,900 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 327 [2020-11-07 04:58:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:58:51,902 INFO L225 Difference]: With dead ends: 382 [2020-11-07 04:58:51,903 INFO L226 Difference]: Without dead ends: 374 [2020-11-07 04:58:51,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5639 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=886, Invalid=32420, Unknown=0, NotChecked=0, Total=33306 [2020-11-07 04:58:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-11-07 04:58:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 212. [2020-11-07 04:58:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-07 04:58:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2020-11-07 04:58:52,406 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 327 [2020-11-07 04:58:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:58:52,406 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2020-11-07 04:58:52,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 04:58:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2020-11-07 04:58:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-11-07 04:58:52,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:58:52,408 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:58:52,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 04:58:52,409 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:58:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:58:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2087090126, now seen corresponding path program 17 times [2020-11-07 04:58:52,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:58:52,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395516146] [2020-11-07 04:58:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:58:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:52,747 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:58:52,944 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-07 04:58:53,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:58:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:58:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:55,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:58:59,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:58:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2533 backedges. 0 proven. 1394 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-11-07 04:59:05,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395516146] [2020-11-07 04:59:05,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:59:05,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-11-07 04:59:05,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928640220] [2020-11-07 04:59:05,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-11-07 04:59:05,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:59:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-11-07 04:59:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=6004, Unknown=0, NotChecked=0, Total=6162 [2020-11-07 04:59:05,009 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 79 states. [2020-11-07 04:59:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:59:42,702 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2020-11-07 04:59:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-11-07 04:59:42,705 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 336 [2020-11-07 04:59:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:59:42,707 INFO L225 Difference]: With dead ends: 392 [2020-11-07 04:59:42,707 INFO L226 Difference]: Without dead ends: 384 [2020-11-07 04:59:42,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6429 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=927, Invalid=34983, Unknown=0, NotChecked=0, Total=35910 [2020-11-07 04:59:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-11-07 04:59:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 217. [2020-11-07 04:59:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-07 04:59:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2020-11-07 04:59:43,216 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 336 [2020-11-07 04:59:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:59:43,217 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2020-11-07 04:59:43,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-11-07 04:59:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2020-11-07 04:59:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-11-07 04:59:43,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:59:43,224 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:59:43,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 04:59:43,225 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:59:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:59:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1498499059, now seen corresponding path program 17 times [2020-11-07 04:59:43,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:59:43,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112266355] [2020-11-07 04:59:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:59:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:43,578 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 9 [2020-11-07 04:59:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:59:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 04:59:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:48,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:53,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 04:59:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:59:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 1479 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-11-07 04:59:56,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112266355] [2020-11-07 04:59:56,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 04:59:56,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-11-07 04:59:56,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640414907] [2020-11-07 04:59:56,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-11-07 04:59:56,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:59:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-11-07 04:59:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=6318, Unknown=0, NotChecked=0, Total=6480 [2020-11-07 04:59:56,361 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 81 states. [2020-11-07 05:00:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:00:37,611 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2020-11-07 05:00:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-11-07 05:00:37,611 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 345 [2020-11-07 05:00:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:00:37,613 INFO L225 Difference]: With dead ends: 402 [2020-11-07 05:00:37,613 INFO L226 Difference]: Without dead ends: 394 [2020-11-07 05:00:37,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6774 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=952, Invalid=36878, Unknown=0, NotChecked=0, Total=37830 [2020-11-07 05:00:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-07 05:00:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 222. [2020-11-07 05:00:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-07 05:00:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 224 transitions. [2020-11-07 05:00:38,145 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 224 transitions. Word has length 345 [2020-11-07 05:00:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:00:38,146 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 224 transitions. [2020-11-07 05:00:38,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-11-07 05:00:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 224 transitions. [2020-11-07 05:00:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-11-07 05:00:38,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:00:38,149 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:00:38,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 05:00:38,149 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:00:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:00:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2035863225, now seen corresponding path program 18 times [2020-11-07 05:00:38,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:00:38,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085921892] [2020-11-07 05:00:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:00:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:38,601 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 05:00:38,791 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-07 05:00:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:00:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 05:00:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:41,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:41,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:42,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:47,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:00:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:00:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 0 proven. 1566 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-11-07 05:00:52,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085921892] [2020-11-07 05:00:52,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:00:52,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-11-07 05:00:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544980426] [2020-11-07 05:00:52,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-11-07 05:00:52,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:00:52,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-11-07 05:00:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=6640, Unknown=0, NotChecked=0, Total=6806 [2020-11-07 05:00:52,784 INFO L87 Difference]: Start difference. First operand 222 states and 224 transitions. Second operand 83 states. [2020-11-07 05:01:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:01:39,559 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2020-11-07 05:01:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-11-07 05:01:39,561 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 354 [2020-11-07 05:01:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:01:39,564 INFO L225 Difference]: With dead ends: 412 [2020-11-07 05:01:39,564 INFO L226 Difference]: Without dead ends: 404 [2020-11-07 05:01:39,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=977, Invalid=38823, Unknown=0, NotChecked=0, Total=39800 [2020-11-07 05:01:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-11-07 05:01:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 227. [2020-11-07 05:01:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-07 05:01:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2020-11-07 05:01:40,133 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 354 [2020-11-07 05:01:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:01:40,133 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2020-11-07 05:01:40,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-11-07 05:01:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2020-11-07 05:01:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-11-07 05:01:40,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:01:40,136 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:01:40,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 05:01:40,136 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:01:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:01:40,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1820782372, now seen corresponding path program 18 times [2020-11-07 05:01:40,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:01:40,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651783751] [2020-11-07 05:01:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:01:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:01:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 05:01:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:40,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:44,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:45,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:49,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:51,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 05:01:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:01:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 0 proven. 1656 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-11-07 05:01:55,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651783751] [2020-11-07 05:01:55,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:01:55,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-11-07 05:01:55,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809210812] [2020-11-07 05:01:55,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-11-07 05:01:55,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:01:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-11-07 05:01:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=6970, Unknown=0, NotChecked=0, Total=7140 [2020-11-07 05:01:55,073 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 85 states.