/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:40:51,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:40:51,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:40:51,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:40:51,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:40:51,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:40:51,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:40:51,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:40:51,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:40:51,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:40:51,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:40:51,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:40:51,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:40:51,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:40:51,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:40:51,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:40:51,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:40:51,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:40:51,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:40:51,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:40:51,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:40:51,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:40:51,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:40:51,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:40:51,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 06:40:51,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 06:40:51,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 06:40:51,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 06:40:51,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 06:40:51,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 06:40:51,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 06:40:51,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 06:40:51,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 06:40:51,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 06:40:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 06:40:51,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 06:40:51,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 06:40:51,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 06:40:51,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:40:51,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:40:51,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:40:51,992 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 06:40:52,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:40:52,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:40:52,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:40:52,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:40:52,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:40:52,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:40:52,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:40:52,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:40:52,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:40:52,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:40:52,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:40:52,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:40:52,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:40:52,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:40:52,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:40:52,013 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:40:52,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:40:52,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:40:52,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:52,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:40:52,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:40:52,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:40:52,015 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:40:52,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:40:52,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:40:52,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:40:52,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:40:52,466 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:40:52,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-11-07 06:40:52,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038aadfd3/969cd93941af4106a1737a3eb858b1de/FLAG383bc16ce [2020-11-07 06:40:53,251 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:40:53,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-11-07 06:40:53,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038aadfd3/969cd93941af4106a1737a3eb858b1de/FLAG383bc16ce [2020-11-07 06:40:53,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038aadfd3/969cd93941af4106a1737a3eb858b1de [2020-11-07 06:40:53,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:40:53,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:40:53,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:53,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:40:53,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:40:53,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f07b74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53, skipping insertion in model container [2020-11-07 06:40:53,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:40:53,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:40:53,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:53,862 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:40:53,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:40:53,905 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:40:53,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53 WrapperNode [2020-11-07 06:40:53,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:40:53,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:40:53,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:40:53,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:40:53,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... [2020-11-07 06:40:53,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:40:53,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:40:53,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:40:53,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:40:53,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:40:54,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:40:54,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:40:54,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:40:54,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:40:54,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:40:54,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:40:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:40:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:40:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:40:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:40:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:40:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:40:54,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:40:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:40:54,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:40:54,566 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:40:54,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:54 BoogieIcfgContainer [2020-11-07 06:40:54,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:40:54,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:40:54,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:40:54,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:40:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:53" (1/3) ... [2020-11-07 06:40:54,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af4cc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:54, skipping insertion in model container [2020-11-07 06:40:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:53" (2/3) ... [2020-11-07 06:40:54,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af4cc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:54, skipping insertion in model container [2020-11-07 06:40:54,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:54" (3/3) ... [2020-11-07 06:40:54,599 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-11-07 06:40:54,617 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:40:54,621 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:40:54,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:40:54,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:40:54,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:40:54,677 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:40:54,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:40:54,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:40:54,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:40:54,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:40:54,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:40:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-07 06:40:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-07 06:40:54,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:54,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:54,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:54,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:54,733 INFO L82 PathProgramCache]: Analyzing trace with hash -774165412, now seen corresponding path program 1 times [2020-11-07 06:40:54,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:54,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253368338] [2020-11-07 06:40:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:55,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253368338] [2020-11-07 06:40:55,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:40:55,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:40:55,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85302274] [2020-11-07 06:40:55,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:40:55,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:40:55,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:40:55,205 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2020-11-07 06:40:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:55,596 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-11-07 06:40:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:40:55,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-07 06:40:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:55,628 INFO L225 Difference]: With dead ends: 61 [2020-11-07 06:40:55,629 INFO L226 Difference]: Without dead ends: 34 [2020-11-07 06:40:55,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:40:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-07 06:40:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-11-07 06:40:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-07 06:40:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-07 06:40:55,687 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-11-07 06:40:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:55,687 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-07 06:40:55,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:40:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-07 06:40:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 06:40:55,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:55,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:55,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:40:55,690 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1660354641, now seen corresponding path program 1 times [2020-11-07 06:40:55,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:55,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693762119] [2020-11-07 06:40:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:40:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:40:55,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693762119] [2020-11-07 06:40:55,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:55,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 06:40:55,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32323374] [2020-11-07 06:40:55,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:40:55,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:55,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:40:55,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:40:55,861 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-11-07 06:40:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:56,288 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-07 06:40:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 06:40:56,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 06:40:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:56,291 INFO L225 Difference]: With dead ends: 47 [2020-11-07 06:40:56,291 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 06:40:56,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:40:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 06:40:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-07 06:40:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 06:40:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-07 06:40:56,310 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-11-07 06:40:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:56,311 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-07 06:40:56,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:40:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-07 06:40:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 06:40:56,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:56,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:56,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:40:56,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash -796378692, now seen corresponding path program 2 times [2020-11-07 06:40:56,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:56,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445821364] [2020-11-07 06:40:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:40:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:40:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 06:40:56,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445821364] [2020-11-07 06:40:56,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:56,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:40:56,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083334383] [2020-11-07 06:40:56,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:40:56,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:56,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:40:56,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:40:56,561 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 10 states. [2020-11-07 06:40:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:57,011 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-11-07 06:40:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:40:57,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-11-07 06:40:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:57,014 INFO L225 Difference]: With dead ends: 56 [2020-11-07 06:40:57,014 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 06:40:57,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:40:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 06:40:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-11-07 06:40:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-07 06:40:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-11-07 06:40:57,031 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-11-07 06:40:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:57,032 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-11-07 06:40:57,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:40:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-11-07 06:40:57,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:40:57,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:57,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:57,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:40:57,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:57,035 INFO L82 PathProgramCache]: Analyzing trace with hash 658832975, now seen corresponding path program 3 times [2020-11-07 06:40:57,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:57,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605737509] [2020-11-07 06:40:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:40:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:40:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:40:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:40:57,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605737509] [2020-11-07 06:40:57,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:57,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:40:57,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229153330] [2020-11-07 06:40:57,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:40:57,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:40:57,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:40:57,270 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 12 states. [2020-11-07 06:40:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:57,956 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-11-07 06:40:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 06:40:57,957 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-11-07 06:40:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:57,959 INFO L225 Difference]: With dead ends: 65 [2020-11-07 06:40:57,959 INFO L226 Difference]: Without dead ends: 61 [2020-11-07 06:40:57,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:40:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-07 06:40:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-11-07 06:40:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 06:40:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-11-07 06:40:57,979 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-11-07 06:40:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:57,979 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-11-07 06:40:57,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:40:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-11-07 06:40:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-07 06:40:57,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:57,981 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:57,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:40:57,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 617656092, now seen corresponding path program 4 times [2020-11-07 06:40:57,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:57,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639878656] [2020-11-07 06:40:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:40:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:40:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:40:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:40:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-07 06:40:58,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639878656] [2020-11-07 06:40:58,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:58,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 06:40:58,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369078255] [2020-11-07 06:40:58,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 06:40:58,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:58,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 06:40:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:40:58,206 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 14 states. [2020-11-07 06:40:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:59,063 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-11-07 06:40:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 06:40:59,064 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-11-07 06:40:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:59,065 INFO L225 Difference]: With dead ends: 74 [2020-11-07 06:40:59,066 INFO L226 Difference]: Without dead ends: 70 [2020-11-07 06:40:59,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:40:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-07 06:40:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-11-07 06:40:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-07 06:40:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-11-07 06:40:59,107 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-11-07 06:40:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:59,108 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-11-07 06:40:59,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 06:40:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-11-07 06:40:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-07 06:40:59,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:59,115 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:59,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:40:59,115 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:59,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1346016495, now seen corresponding path program 5 times [2020-11-07 06:40:59,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:59,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121017422] [2020-11-07 06:40:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:40:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:40:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:40:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:40:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:40:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 06:40:59,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121017422] [2020-11-07 06:40:59,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:59,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 06:40:59,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572884995] [2020-11-07 06:40:59,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 06:40:59,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:59,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 06:40:59,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:40:59,402 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 16 states. [2020-11-07 06:41:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:00,408 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-11-07 06:41:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 06:41:00,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-11-07 06:41:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:00,414 INFO L225 Difference]: With dead ends: 83 [2020-11-07 06:41:00,414 INFO L226 Difference]: Without dead ends: 79 [2020-11-07 06:41:00,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 06:41:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-07 06:41:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-11-07 06:41:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 06:41:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-11-07 06:41:00,437 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-11-07 06:41:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:00,437 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-11-07 06:41:00,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 06:41:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-11-07 06:41:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-07 06:41:00,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:00,440 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:00,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:41:00,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -173372292, now seen corresponding path program 6 times [2020-11-07 06:41:00,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:00,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894109894] [2020-11-07 06:41:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-07 06:41:00,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894109894] [2020-11-07 06:41:00,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:00,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-11-07 06:41:00,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654478995] [2020-11-07 06:41:00,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 06:41:00,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:00,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 06:41:00,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:41:00,779 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 18 states. [2020-11-07 06:41:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:01,944 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-11-07 06:41:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 06:41:01,945 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-11-07 06:41:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:01,947 INFO L225 Difference]: With dead ends: 92 [2020-11-07 06:41:01,947 INFO L226 Difference]: Without dead ends: 88 [2020-11-07 06:41:01,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=1166, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 06:41:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-07 06:41:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-11-07 06:41:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 06:41:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-11-07 06:41:01,971 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-11-07 06:41:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:01,972 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-11-07 06:41:01,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 06:41:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-11-07 06:41:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-07 06:41:01,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:01,974 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:01,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:41:01,974 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1706279823, now seen corresponding path program 7 times [2020-11-07 06:41:01,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309177765] [2020-11-07 06:41:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 14 proven. 119 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-11-07 06:41:02,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309177765] [2020-11-07 06:41:02,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:02,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 06:41:02,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776419581] [2020-11-07 06:41:02,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 06:41:02,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:02,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 06:41:02,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:41:02,294 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 20 states. [2020-11-07 06:41:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:03,695 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2020-11-07 06:41:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 06:41:03,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 83 [2020-11-07 06:41:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:03,703 INFO L225 Difference]: With dead ends: 101 [2020-11-07 06:41:03,703 INFO L226 Difference]: Without dead ends: 97 [2020-11-07 06:41:03,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2020-11-07 06:41:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-07 06:41:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-11-07 06:41:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-07 06:41:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-11-07 06:41:03,738 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-11-07 06:41:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:03,739 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-11-07 06:41:03,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 06:41:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-11-07 06:41:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-07 06:41:03,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:03,744 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:03,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 06:41:03,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:03,745 INFO L82 PathProgramCache]: Analyzing trace with hash -661925412, now seen corresponding path program 8 times [2020-11-07 06:41:03,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:03,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148647116] [2020-11-07 06:41:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 16 proven. 156 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-07 06:41:04,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148647116] [2020-11-07 06:41:04,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:04,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 06:41:04,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015679826] [2020-11-07 06:41:04,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 06:41:04,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:04,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 06:41:04,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:41:04,193 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 22 states. [2020-11-07 06:41:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:05,730 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2020-11-07 06:41:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 06:41:05,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 92 [2020-11-07 06:41:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:05,732 INFO L225 Difference]: With dead ends: 110 [2020-11-07 06:41:05,732 INFO L226 Difference]: Without dead ends: 106 [2020-11-07 06:41:05,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=628, Invalid=1822, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 06:41:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-07 06:41:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-11-07 06:41:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-07 06:41:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-11-07 06:41:05,756 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-11-07 06:41:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:05,757 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-11-07 06:41:05,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 06:41:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-11-07 06:41:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-07 06:41:05,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:05,759 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:05,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 06:41:05,759 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:05,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1761965521, now seen corresponding path program 9 times [2020-11-07 06:41:05,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:05,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712967895] [2020-11-07 06:41:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-07 06:41:06,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712967895] [2020-11-07 06:41:06,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:06,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-11-07 06:41:06,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617776193] [2020-11-07 06:41:06,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 06:41:06,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 06:41:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:41:06,209 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 24 states. [2020-11-07 06:41:07,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:07,929 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2020-11-07 06:41:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-07 06:41:07,930 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-11-07 06:41:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:07,932 INFO L225 Difference]: With dead ends: 119 [2020-11-07 06:41:07,932 INFO L226 Difference]: Without dead ends: 115 [2020-11-07 06:41:07,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=766, Invalid=2204, Unknown=0, NotChecked=0, Total=2970 [2020-11-07 06:41:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-07 06:41:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-11-07 06:41:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-07 06:41:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-11-07 06:41:07,955 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-11-07 06:41:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:07,956 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-11-07 06:41:07,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 06:41:07,956 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-11-07 06:41:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-07 06:41:07,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:07,958 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:07,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 06:41:07,959 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash 829062972, now seen corresponding path program 10 times [2020-11-07 06:41:07,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:07,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525149692] [2020-11-07 06:41:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-11-07 06:41:08,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525149692] [2020-11-07 06:41:08,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:08,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-11-07 06:41:08,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105975710] [2020-11-07 06:41:08,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 06:41:08,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:08,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 06:41:08,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2020-11-07 06:41:08,437 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 26 states. [2020-11-07 06:41:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:10,464 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-11-07 06:41:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 06:41:10,465 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 110 [2020-11-07 06:41:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:10,467 INFO L225 Difference]: With dead ends: 128 [2020-11-07 06:41:10,467 INFO L226 Difference]: Without dead ends: 124 [2020-11-07 06:41:10,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=918, Invalid=2622, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 06:41:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-07 06:41:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-11-07 06:41:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-07 06:41:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-11-07 06:41:10,527 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-11-07 06:41:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:10,528 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-11-07 06:41:10,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 06:41:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-11-07 06:41:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-07 06:41:10,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:10,535 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:10,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 06:41:10,535 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1797723953, now seen corresponding path program 11 times [2020-11-07 06:41:10,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:10,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890510892] [2020-11-07 06:41:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 22 proven. 297 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-07 06:41:11,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890510892] [2020-11-07 06:41:11,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:11,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-11-07 06:41:11,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455665266] [2020-11-07 06:41:11,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 06:41:11,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:11,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 06:41:11,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2020-11-07 06:41:11,087 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 28 states. [2020-11-07 06:41:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:13,447 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2020-11-07 06:41:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 06:41:13,448 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 119 [2020-11-07 06:41:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:13,449 INFO L225 Difference]: With dead ends: 137 [2020-11-07 06:41:13,450 INFO L226 Difference]: Without dead ends: 133 [2020-11-07 06:41:13,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1084, Invalid=3076, Unknown=0, NotChecked=0, Total=4160 [2020-11-07 06:41:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-07 06:41:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-11-07 06:41:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 06:41:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-11-07 06:41:13,478 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-11-07 06:41:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:13,478 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-11-07 06:41:13,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 06:41:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-11-07 06:41:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-11-07 06:41:13,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:13,480 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:13,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 06:41:13,481 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1833134948, now seen corresponding path program 12 times [2020-11-07 06:41:13,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:13,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727855535] [2020-11-07 06:41:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 24 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-11-07 06:41:14,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727855535] [2020-11-07 06:41:14,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:14,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-11-07 06:41:14,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257118498] [2020-11-07 06:41:14,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 06:41:14,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 06:41:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:41:14,099 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 30 states. [2020-11-07 06:41:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:16,668 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2020-11-07 06:41:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-07 06:41:16,669 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 128 [2020-11-07 06:41:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:16,671 INFO L225 Difference]: With dead ends: 146 [2020-11-07 06:41:16,671 INFO L226 Difference]: Without dead ends: 142 [2020-11-07 06:41:16,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1264, Invalid=3566, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 06:41:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-07 06:41:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-11-07 06:41:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-07 06:41:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-11-07 06:41:16,697 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-11-07 06:41:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:16,699 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-11-07 06:41:16,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 06:41:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-11-07 06:41:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 06:41:16,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:16,701 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:16,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 06:41:16,702 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash 832102255, now seen corresponding path program 13 times [2020-11-07 06:41:16,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:16,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865830963] [2020-11-07 06:41:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 26 proven. 416 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-11-07 06:41:17,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865830963] [2020-11-07 06:41:17,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:17,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-07 06:41:17,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349747894] [2020-11-07 06:41:17,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 06:41:17,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:17,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 06:41:17,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-11-07 06:41:17,371 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 32 states. [2020-11-07 06:41:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:20,117 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2020-11-07 06:41:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 06:41:20,118 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 137 [2020-11-07 06:41:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:20,119 INFO L225 Difference]: With dead ends: 155 [2020-11-07 06:41:20,120 INFO L226 Difference]: Without dead ends: 151 [2020-11-07 06:41:20,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1458, Invalid=4092, Unknown=0, NotChecked=0, Total=5550 [2020-11-07 06:41:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-07 06:41:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-11-07 06:41:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-07 06:41:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-11-07 06:41:20,142 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-11-07 06:41:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:20,143 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-11-07 06:41:20,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 06:41:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-11-07 06:41:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-07 06:41:20,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:20,144 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:20,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 06:41:20,145 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:20,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 494408188, now seen corresponding path program 14 times [2020-11-07 06:41:20,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:20,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218855471] [2020-11-07 06:41:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 28 proven. 483 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-11-07 06:41:20,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218855471] [2020-11-07 06:41:20,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:20,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-11-07 06:41:20,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370943796] [2020-11-07 06:41:20,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 06:41:20,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:20,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 06:41:20,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:41:20,976 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 34 states. [2020-11-07 06:41:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:24,086 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2020-11-07 06:41:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-07 06:41:24,087 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 146 [2020-11-07 06:41:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:24,089 INFO L225 Difference]: With dead ends: 164 [2020-11-07 06:41:24,090 INFO L226 Difference]: Without dead ends: 160 [2020-11-07 06:41:24,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1666, Invalid=4654, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 06:41:24,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-07 06:41:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-11-07 06:41:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-07 06:41:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-11-07 06:41:24,114 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-11-07 06:41:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:24,114 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-11-07 06:41:24,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 06:41:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-11-07 06:41:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-07 06:41:24,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:24,115 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:24,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 06:41:24,116 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash 17067535, now seen corresponding path program 15 times [2020-11-07 06:41:24,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:24,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072895464] [2020-11-07 06:41:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 30 proven. 555 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-11-07 06:41:24,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072895464] [2020-11-07 06:41:24,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:24,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 06:41:24,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811728397] [2020-11-07 06:41:24,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 06:41:24,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 06:41:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=966, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 06:41:24,922 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 36 states. [2020-11-07 06:41:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:28,191 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2020-11-07 06:41:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-07 06:41:28,192 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 155 [2020-11-07 06:41:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:28,195 INFO L225 Difference]: With dead ends: 173 [2020-11-07 06:41:28,195 INFO L226 Difference]: Without dead ends: 169 [2020-11-07 06:41:28,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1888, Invalid=5252, Unknown=0, NotChecked=0, Total=7140 [2020-11-07 06:41:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-11-07 06:41:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-11-07 06:41:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-07 06:41:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-11-07 06:41:28,223 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-11-07 06:41:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:28,223 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-11-07 06:41:28,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 06:41:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-11-07 06:41:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-07 06:41:28,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:28,225 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:28,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 06:41:28,225 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -518850724, now seen corresponding path program 16 times [2020-11-07 06:41:28,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:28,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722718760] [2020-11-07 06:41:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 32 proven. 632 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-11-07 06:41:29,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722718760] [2020-11-07 06:41:29,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:29,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-11-07 06:41:29,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786179367] [2020-11-07 06:41:29,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 06:41:29,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:29,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 06:41:29,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:41:29,131 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 38 states. [2020-11-07 06:41:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:32,934 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2020-11-07 06:41:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-07 06:41:32,935 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 164 [2020-11-07 06:41:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:32,936 INFO L225 Difference]: With dead ends: 182 [2020-11-07 06:41:32,936 INFO L226 Difference]: Without dead ends: 178 [2020-11-07 06:41:32,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2124, Invalid=5886, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 06:41:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-07 06:41:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-11-07 06:41:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-07 06:41:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-11-07 06:41:32,967 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-11-07 06:41:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:32,967 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-11-07 06:41:32,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 06:41:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-11-07 06:41:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-07 06:41:32,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:32,969 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:32,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 06:41:32,969 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -127560529, now seen corresponding path program 17 times [2020-11-07 06:41:32,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:32,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380908893] [2020-11-07 06:41:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:41:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 34 proven. 714 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-11-07 06:41:33,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380908893] [2020-11-07 06:41:33,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:33,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-11-07 06:41:33,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315854550] [2020-11-07 06:41:33,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 06:41:33,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:33,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 06:41:33,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1194, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 06:41:33,935 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 40 states. [2020-11-07 06:41:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:37,924 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2020-11-07 06:41:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-07 06:41:37,924 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 173 [2020-11-07 06:41:37,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:37,927 INFO L225 Difference]: With dead ends: 191 [2020-11-07 06:41:37,927 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 06:41:37,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2374, Invalid=6556, Unknown=0, NotChecked=0, Total=8930 [2020-11-07 06:41:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 06:41:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-11-07 06:41:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-07 06:41:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-11-07 06:41:37,955 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-11-07 06:41:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:37,956 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-11-07 06:41:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 06:41:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-11-07 06:41:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-07 06:41:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:37,958 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:37,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 06:41:37,958 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:37,959 INFO L82 PathProgramCache]: Analyzing trace with hash 998458556, now seen corresponding path program 18 times [2020-11-07 06:41:37,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:37,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251492382] [2020-11-07 06:41:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:41:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:41:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 36 proven. 801 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-07 06:41:39,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251492382] [2020-11-07 06:41:39,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:39,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-11-07 06:41:39,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930117825] [2020-11-07 06:41:39,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 06:41:39,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 06:41:39,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 06:41:39,014 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 42 states. [2020-11-07 06:41:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:43,257 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2020-11-07 06:41:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-07 06:41:43,258 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 182 [2020-11-07 06:41:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:43,260 INFO L225 Difference]: With dead ends: 200 [2020-11-07 06:41:43,260 INFO L226 Difference]: Without dead ends: 196 [2020-11-07 06:41:43,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2638, Invalid=7262, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 06:41:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-07 06:41:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-11-07 06:41:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-07 06:41:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-11-07 06:41:43,293 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-11-07 06:41:43,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:43,294 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-11-07 06:41:43,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 06:41:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-11-07 06:41:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-07 06:41:43,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:43,296 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:43,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 06:41:43,296 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash 243684175, now seen corresponding path program 19 times [2020-11-07 06:41:43,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:43,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851032353] [2020-11-07 06:41:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:41:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:41:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:41:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 38 proven. 893 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-11-07 06:41:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851032353] [2020-11-07 06:41:44,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:44,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 06:41:44,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859034785] [2020-11-07 06:41:44,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 06:41:44,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 06:41:44,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=1446, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 06:41:44,475 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 44 states. [2020-11-07 06:41:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:49,154 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2020-11-07 06:41:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-11-07 06:41:49,154 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 191 [2020-11-07 06:41:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:49,157 INFO L225 Difference]: With dead ends: 209 [2020-11-07 06:41:49,157 INFO L226 Difference]: Without dead ends: 205 [2020-11-07 06:41:49,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2916, Invalid=8004, Unknown=0, NotChecked=0, Total=10920 [2020-11-07 06:41:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-11-07 06:41:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-11-07 06:41:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-07 06:41:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-11-07 06:41:49,187 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-11-07 06:41:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:49,187 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-11-07 06:41:49,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 06:41:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-11-07 06:41:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-07 06:41:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:49,190 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:49,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 06:41:49,190 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:49,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:49,191 INFO L82 PathProgramCache]: Analyzing trace with hash 960428572, now seen corresponding path program 20 times [2020-11-07 06:41:49,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:49,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194004346] [2020-11-07 06:41:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:41:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:41:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:41:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:41:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 40 proven. 990 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-11-07 06:41:50,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194004346] [2020-11-07 06:41:50,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:50,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-11-07 06:41:50,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997267332] [2020-11-07 06:41:50,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 06:41:50,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:50,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 06:41:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1581, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 06:41:50,459 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 46 states. [2020-11-07 06:41:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:55,490 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2020-11-07 06:41:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-07 06:41:55,490 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 200 [2020-11-07 06:41:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:55,493 INFO L225 Difference]: With dead ends: 218 [2020-11-07 06:41:55,493 INFO L226 Difference]: Without dead ends: 214 [2020-11-07 06:41:55,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3208, Invalid=8782, Unknown=0, NotChecked=0, Total=11990 [2020-11-07 06:41:55,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-07 06:41:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-11-07 06:41:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-07 06:41:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-11-07 06:41:55,525 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-11-07 06:41:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:55,526 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-11-07 06:41:55,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 06:41:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-11-07 06:41:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-11-07 06:41:55,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:55,528 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:55,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 06:41:55,528 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash -609179153, now seen corresponding path program 21 times [2020-11-07 06:41:55,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:55,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210696055] [2020-11-07 06:41:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:41:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:41:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:41:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:41:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:41:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:41:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:41:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:41:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:41:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:41:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:41:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:41:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:41:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:41:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:41:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:41:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:41:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:41:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:41:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:41:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:41:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 42 proven. 1092 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-11-07 06:41:56,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210696055] [2020-11-07 06:41:56,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:56,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-11-07 06:41:56,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553263458] [2020-11-07 06:41:56,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 06:41:56,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:56,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 06:41:56,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 06:41:56,904 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 48 states. [2020-11-07 06:42:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:02,488 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2020-11-07 06:42:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-11-07 06:42:02,489 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 209 [2020-11-07 06:42:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:02,491 INFO L225 Difference]: With dead ends: 227 [2020-11-07 06:42:02,492 INFO L226 Difference]: Without dead ends: 223 [2020-11-07 06:42:02,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3514, Invalid=9596, Unknown=0, NotChecked=0, Total=13110 [2020-11-07 06:42:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-11-07 06:42:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-11-07 06:42:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-07 06:42:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-11-07 06:42:02,532 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-11-07 06:42:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:02,533 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-11-07 06:42:02,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-07 06:42:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-11-07 06:42:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-11-07 06:42:02,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:02,537 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:02,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 06:42:02,538 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:02,538 INFO L82 PathProgramCache]: Analyzing trace with hash -180611204, now seen corresponding path program 22 times [2020-11-07 06:42:02,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:02,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545346898] [2020-11-07 06:42:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-11-07 06:42:04,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545346898] [2020-11-07 06:42:04,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:04,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-11-07 06:42:04,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740038823] [2020-11-07 06:42:04,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-07 06:42:04,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:04,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-07 06:42:04,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 06:42:04,058 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 50 states. [2020-11-07 06:42:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:09,879 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2020-11-07 06:42:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-07 06:42:09,880 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 218 [2020-11-07 06:42:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:09,881 INFO L225 Difference]: With dead ends: 236 [2020-11-07 06:42:09,882 INFO L226 Difference]: Without dead ends: 232 [2020-11-07 06:42:09,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3236 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3834, Invalid=10446, Unknown=0, NotChecked=0, Total=14280 [2020-11-07 06:42:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-11-07 06:42:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-11-07 06:42:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-07 06:42:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-11-07 06:42:09,922 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-11-07 06:42:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:09,922 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-11-07 06:42:09,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-07 06:42:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-11-07 06:42:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-07 06:42:09,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:09,925 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:09,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 06:42:09,925 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:09,926 INFO L82 PathProgramCache]: Analyzing trace with hash 967743631, now seen corresponding path program 23 times [2020-11-07 06:42:09,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:09,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848404415] [2020-11-07 06:42:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:42:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 46 proven. 1311 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-11-07 06:42:11,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848404415] [2020-11-07 06:42:11,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:11,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-11-07 06:42:11,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190673169] [2020-11-07 06:42:11,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 06:42:11,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:11,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 06:42:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=2022, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 06:42:11,576 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 52 states. [2020-11-07 06:42:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:18,004 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2020-11-07 06:42:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-07 06:42:18,005 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 227 [2020-11-07 06:42:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:18,007 INFO L225 Difference]: With dead ends: 245 [2020-11-07 06:42:18,007 INFO L226 Difference]: Without dead ends: 241 [2020-11-07 06:42:18,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4168, Invalid=11332, Unknown=0, NotChecked=0, Total=15500 [2020-11-07 06:42:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-11-07 06:42:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-11-07 06:42:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-07 06:42:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-11-07 06:42:18,053 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-11-07 06:42:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:18,054 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-11-07 06:42:18,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 06:42:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-11-07 06:42:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-11-07 06:42:18,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:18,056 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:18,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 06:42:18,057 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash -118448932, now seen corresponding path program 24 times [2020-11-07 06:42:18,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:18,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519922226] [2020-11-07 06:42:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:42:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:42:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 48 proven. 1428 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-11-07 06:42:19,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519922226] [2020-11-07 06:42:19,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:19,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-11-07 06:42:19,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331340517] [2020-11-07 06:42:19,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-07 06:42:19,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:19,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-07 06:42:19,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 06:42:19,803 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 54 states. [2020-11-07 06:42:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:26,741 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2020-11-07 06:42:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-07 06:42:26,742 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 236 [2020-11-07 06:42:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:26,744 INFO L225 Difference]: With dead ends: 254 [2020-11-07 06:42:26,744 INFO L226 Difference]: Without dead ends: 250 [2020-11-07 06:42:26,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=4516, Invalid=12254, Unknown=0, NotChecked=0, Total=16770 [2020-11-07 06:42:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-07 06:42:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-11-07 06:42:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-07 06:42:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-11-07 06:42:26,791 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-11-07 06:42:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:26,791 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-11-07 06:42:26,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-07 06:42:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-11-07 06:42:26,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-11-07 06:42:26,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:26,794 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:26,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 06:42:26,794 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash -473293009, now seen corresponding path program 25 times [2020-11-07 06:42:26,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:26,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312307297] [2020-11-07 06:42:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:42:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:42:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:42:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 50 proven. 1550 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-11-07 06:42:28,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312307297] [2020-11-07 06:42:28,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:28,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-11-07 06:42:28,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934721566] [2020-11-07 06:42:28,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-07 06:42:28,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-07 06:42:28,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=734, Invalid=2346, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 06:42:28,775 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 56 states. [2020-11-07 06:42:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:36,438 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2020-11-07 06:42:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-11-07 06:42:36,439 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 245 [2020-11-07 06:42:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:36,441 INFO L225 Difference]: With dead ends: 263 [2020-11-07 06:42:36,441 INFO L226 Difference]: Without dead ends: 259 [2020-11-07 06:42:36,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=4878, Invalid=13212, Unknown=0, NotChecked=0, Total=18090 [2020-11-07 06:42:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-07 06:42:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-11-07 06:42:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-07 06:42:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-11-07 06:42:36,486 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-11-07 06:42:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:36,487 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-11-07 06:42:36,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-07 06:42:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-11-07 06:42:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-11-07 06:42:36,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:36,489 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:36,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 06:42:36,489 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1672312260, now seen corresponding path program 26 times [2020-11-07 06:42:36,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:36,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320546227] [2020-11-07 06:42:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:42:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:42:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:42:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:42:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 52 proven. 1677 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-11-07 06:42:38,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320546227] [2020-11-07 06:42:38,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:38,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-11-07 06:42:38,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472092226] [2020-11-07 06:42:38,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-07 06:42:38,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-07 06:42:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=2517, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 06:42:38,639 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 58 states. [2020-11-07 06:42:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:46,660 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions. [2020-11-07 06:42:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-07 06:42:46,661 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 254 [2020-11-07 06:42:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:46,663 INFO L225 Difference]: With dead ends: 272 [2020-11-07 06:42:46,664 INFO L226 Difference]: Without dead ends: 268 [2020-11-07 06:42:46,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4448 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=5254, Invalid=14206, Unknown=0, NotChecked=0, Total=19460 [2020-11-07 06:42:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-11-07 06:42:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-11-07 06:42:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-07 06:42:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-11-07 06:42:46,723 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-11-07 06:42:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:46,724 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-11-07 06:42:46,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-07 06:42:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-11-07 06:42:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-11-07 06:42:46,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:46,727 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:46,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 06:42:46,727 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash 382549455, now seen corresponding path program 27 times [2020-11-07 06:42:46,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:46,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676901637] [2020-11-07 06:42:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:42:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:42:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:42:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:42:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:42:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:42:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:42:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:42:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:42:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:42:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:42:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:42:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:42:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:42:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:42:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:42:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:42:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:42:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:42:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:42:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:42:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:42:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:42:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:42:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:42:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:42:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 54 proven. 1809 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-11-07 06:42:48,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676901637] [2020-11-07 06:42:48,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:48,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-11-07 06:42:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097498351] [2020-11-07 06:42:48,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 06:42:48,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:48,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 06:42:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=2694, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 06:42:48,980 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 60 states. [2020-11-07 06:42:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:57,650 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2020-11-07 06:42:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-11-07 06:42:57,651 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 263 [2020-11-07 06:42:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:57,654 INFO L225 Difference]: With dead ends: 281 [2020-11-07 06:42:57,654 INFO L226 Difference]: Without dead ends: 277 [2020-11-07 06:42:57,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=5644, Invalid=15236, Unknown=0, NotChecked=0, Total=20880 [2020-11-07 06:42:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-07 06:42:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-11-07 06:42:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-11-07 06:42:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-11-07 06:42:57,705 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-11-07 06:42:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:57,706 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-11-07 06:42:57,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 06:42:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-11-07 06:42:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-11-07 06:42:57,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:57,709 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:57,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 06:42:57,709 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1708646300, now seen corresponding path program 28 times [2020-11-07 06:42:57,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:57,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154860625] [2020-11-07 06:42:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:43:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:43:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:43:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:43:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:43:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:43:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:43:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:43:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:43:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:43:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:43:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:43:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:43:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:43:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:43:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:43:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:43:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:43:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:43:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:43:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:43:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:43:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:43:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:43:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:43:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:43:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3514 backedges. 56 proven. 1946 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-11-07 06:43:00,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154860625] [2020-11-07 06:43:00,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:00,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-11-07 06:43:00,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121467074] [2020-11-07 06:43:00,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-07 06:43:00,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:00,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-07 06:43:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 06:43:00,207 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 62 states. [2020-11-07 06:43:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:09,894 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2020-11-07 06:43:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-07 06:43:09,895 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 272 [2020-11-07 06:43:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:09,897 INFO L225 Difference]: With dead ends: 290 [2020-11-07 06:43:09,897 INFO L226 Difference]: Without dead ends: 286 [2020-11-07 06:43:09,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5126 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=6048, Invalid=16302, Unknown=0, NotChecked=0, Total=22350 [2020-11-07 06:43:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-11-07 06:43:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-11-07 06:43:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-11-07 06:43:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-11-07 06:43:09,948 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-11-07 06:43:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:09,949 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-11-07 06:43:09,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-07 06:43:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-11-07 06:43:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-11-07 06:43:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:09,951 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 06:43:09,952 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 822211695, now seen corresponding path program 29 times [2020-11-07 06:43:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:09,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450295660] [2020-11-07 06:43:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:43:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:43:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:43:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:43:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:43:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:43:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:43:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:43:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:43:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:43:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:43:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:43:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:43:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:43:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:43:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:43:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:43:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:43:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:43:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:43:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:43:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:43:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:43:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:43:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:43:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:43:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:43:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 58 proven. 2088 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-11-07 06:43:12,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450295660] [2020-11-07 06:43:12,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:12,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-11-07 06:43:12,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030459165] [2020-11-07 06:43:12,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 06:43:12,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 06:43:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=966, Invalid=3066, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 06:43:12,637 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 64 states. [2020-11-07 06:43:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:22,894 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2020-11-07 06:43:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-11-07 06:43:22,895 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 281 [2020-11-07 06:43:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:22,898 INFO L225 Difference]: With dead ends: 299 [2020-11-07 06:43:22,898 INFO L226 Difference]: Without dead ends: 295 [2020-11-07 06:43:22,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5483 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=6466, Invalid=17404, Unknown=0, NotChecked=0, Total=23870 [2020-11-07 06:43:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-07 06:43:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-11-07 06:43:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-11-07 06:43:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-11-07 06:43:22,953 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-11-07 06:43:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:22,953 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-11-07 06:43:22,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 06:43:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-11-07 06:43:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-11-07 06:43:22,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:22,956 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:22,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 06:43:22,956 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:22,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1786158332, now seen corresponding path program 30 times [2020-11-07 06:43:22,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:22,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209305983] [2020-11-07 06:43:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:43:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:43:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:43:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:43:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:43:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:43:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:43:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:43:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:43:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:43:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:43:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:43:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:43:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:43:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:43:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:43:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:43:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:43:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:43:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:43:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:43:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:43:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:43:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:43:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:43:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:43:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:43:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:43:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4035 backedges. 60 proven. 2235 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-11-07 06:43:25,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209305983] [2020-11-07 06:43:25,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:25,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-11-07 06:43:25,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141542823] [2020-11-07 06:43:25,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-07 06:43:25,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:25,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-07 06:43:25,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1029, Invalid=3261, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 06:43:25,761 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 66 states. [2020-11-07 06:43:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:36,950 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2020-11-07 06:43:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-11-07 06:43:36,952 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 290 [2020-11-07 06:43:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:36,955 INFO L225 Difference]: With dead ends: 308 [2020-11-07 06:43:36,955 INFO L226 Difference]: Without dead ends: 304 [2020-11-07 06:43:36,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5852 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=6898, Invalid=18542, Unknown=0, NotChecked=0, Total=25440 [2020-11-07 06:43:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-07 06:43:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-11-07 06:43:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-11-07 06:43:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-11-07 06:43:37,009 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-11-07 06:43:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:37,010 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-11-07 06:43:37,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-07 06:43:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-11-07 06:43:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-11-07 06:43:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:37,012 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:37,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 06:43:37,013 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1379025679, now seen corresponding path program 31 times [2020-11-07 06:43:37,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747344816] [2020-11-07 06:43:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:43:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:43:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:43:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:43:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:43:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:43:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:43:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:43:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:43:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:43:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:43:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:43:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:43:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:43:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:43:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:43:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:43:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:43:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:43:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:43:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:43:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:43:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:43:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:43:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:43:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:43:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:43:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:43:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:43:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 62 proven. 2387 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-11-07 06:43:40,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747344816] [2020-11-07 06:43:40,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:40,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-11-07 06:43:40,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792681440] [2020-11-07 06:43:40,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-07 06:43:40,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:40,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-07 06:43:40,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=3462, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 06:43:40,355 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 68 states. [2020-11-07 06:43:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:52,160 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2020-11-07 06:43:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-11-07 06:43:52,161 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 299 [2020-11-07 06:43:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:52,163 INFO L225 Difference]: With dead ends: 317 [2020-11-07 06:43:52,164 INFO L226 Difference]: Without dead ends: 313 [2020-11-07 06:43:52,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6233 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=7344, Invalid=19716, Unknown=0, NotChecked=0, Total=27060 [2020-11-07 06:43:52,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-11-07 06:43:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-11-07 06:43:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-11-07 06:43:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-11-07 06:43:52,218 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-11-07 06:43:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:52,219 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-11-07 06:43:52,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-07 06:43:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-11-07 06:43:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-11-07 06:43:52,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:52,222 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:52,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 06:43:52,223 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:52,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1381711268, now seen corresponding path program 32 times [2020-11-07 06:43:52,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:52,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842351305] [2020-11-07 06:43:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:43:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:43:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:43:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:43:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:43:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:43:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:43:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:43:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:43:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:43:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:43:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:43:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:43:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:43:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:43:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:43:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:43:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:43:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:43:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:43:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:43:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:43:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:43:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:43:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:43:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:43:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:43:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:43:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:43:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:43:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 64 proven. 2544 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-11-07 06:43:55,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842351305] [2020-11-07 06:43:55,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:55,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-11-07 06:43:55,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337206532] [2020-11-07 06:43:55,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-07 06:43:55,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-07 06:43:55,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1161, Invalid=3669, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 06:43:55,659 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 70 states. [2020-11-07 06:44:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:08,284 INFO L93 Difference]: Finished difference Result 326 states and 326 transitions. [2020-11-07 06:44:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-11-07 06:44:08,285 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 308 [2020-11-07 06:44:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:08,288 INFO L225 Difference]: With dead ends: 326 [2020-11-07 06:44:08,288 INFO L226 Difference]: Without dead ends: 322 [2020-11-07 06:44:08,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=7804, Invalid=20926, Unknown=0, NotChecked=0, Total=28730 [2020-11-07 06:44:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-07 06:44:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-11-07 06:44:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-11-07 06:44:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-11-07 06:44:08,353 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-11-07 06:44:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:08,354 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-11-07 06:44:08,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-07 06:44:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-11-07 06:44:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-11-07 06:44:08,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:08,357 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:08,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 06:44:08,357 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash -72865361, now seen corresponding path program 33 times [2020-11-07 06:44:08,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:08,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224380710] [2020-11-07 06:44:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:44:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:44:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:44:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:44:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:44:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:44:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:44:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:44:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:44:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:44:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:44:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:44:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:44:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:44:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:44:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:44:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:44:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:44:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:44:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:44:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:44:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:44:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:44:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:44:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:44:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:44:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:44:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:44:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:44:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:44:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:44:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:44:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:44:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 66 proven. 2706 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-11-07 06:44:12,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224380710] [2020-11-07 06:44:12,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:12,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-11-07 06:44:12,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584433306] [2020-11-07 06:44:12,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-07 06:44:12,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-07 06:44:12,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1230, Invalid=3882, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 06:44:12,475 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 72 states. [2020-11-07 06:44:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:26,512 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2020-11-07 06:44:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-11-07 06:44:26,513 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 317 [2020-11-07 06:44:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:26,516 INFO L225 Difference]: With dead ends: 335 [2020-11-07 06:44:26,516 INFO L226 Difference]: Without dead ends: 331 [2020-11-07 06:44:26,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7031 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=8278, Invalid=22172, Unknown=0, NotChecked=0, Total=30450 [2020-11-07 06:44:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-11-07 06:44:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-11-07 06:44:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-11-07 06:44:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-11-07 06:44:26,585 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-11-07 06:44:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:26,586 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-11-07 06:44:26,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-07 06:44:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-11-07 06:44:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-11-07 06:44:26,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:26,589 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:26,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 06:44:26,589 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:26,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2124918852, now seen corresponding path program 34 times [2020-11-07 06:44:26,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:26,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792096230] [2020-11-07 06:44:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:44:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:44:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:44:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:44:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:44:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:44:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:44:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:44:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:44:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:44:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:44:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:44:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:44:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:44:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:44:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:44:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:44:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:44:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:44:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:44:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:44:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:44:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:44:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:44:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:44:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:44:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:44:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:44:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:44:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:44:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:44:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:44:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:44:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:44:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 68 proven. 2873 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-11-07 06:44:30,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792096230] [2020-11-07 06:44:30,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:30,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-11-07 06:44:30,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121178943] [2020-11-07 06:44:30,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-07 06:44:30,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:30,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-07 06:44:30,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=4101, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 06:44:30,697 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 74 states. [2020-11-07 06:44:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:45,409 INFO L93 Difference]: Finished difference Result 344 states and 344 transitions. [2020-11-07 06:44:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-11-07 06:44:45,410 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 326 [2020-11-07 06:44:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:45,412 INFO L225 Difference]: With dead ends: 344 [2020-11-07 06:44:45,413 INFO L226 Difference]: Without dead ends: 340 [2020-11-07 06:44:45,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7448 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=8766, Invalid=23454, Unknown=0, NotChecked=0, Total=32220 [2020-11-07 06:44:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-11-07 06:44:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-11-07 06:44:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-11-07 06:44:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-11-07 06:44:45,472 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-11-07 06:44:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:45,473 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-11-07 06:44:45,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-07 06:44:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-11-07 06:44:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-11-07 06:44:45,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:45,476 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:45,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 06:44:45,477 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1339185073, now seen corresponding path program 35 times [2020-11-07 06:44:45,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:45,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568879881] [2020-11-07 06:44:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:44:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:44:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:44:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:44:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:44:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:44:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:44:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:44:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:44:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:44:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:44:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:44:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:44:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:44:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:44:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:44:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:44:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:44:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:44:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:44:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:44:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:44:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:44:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:44:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:44:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:44:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:44:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:44:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:44:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:44:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:44:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:44:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:44:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:44:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:44:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5495 backedges. 70 proven. 3045 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-11-07 06:44:49,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568879881] [2020-11-07 06:44:49,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:49,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-11-07 06:44:49,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604059342] [2020-11-07 06:44:49,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 06:44:49,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:49,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 06:44:49,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1374, Invalid=4326, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 06:44:49,996 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 76 states. [2020-11-07 06:45:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:45:06,192 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2020-11-07 06:45:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-11-07 06:45:06,201 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 335 [2020-11-07 06:45:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:45:06,203 INFO L225 Difference]: With dead ends: 353 [2020-11-07 06:45:06,203 INFO L226 Difference]: Without dead ends: 349 [2020-11-07 06:45:06,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7877 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=9268, Invalid=24772, Unknown=0, NotChecked=0, Total=34040 [2020-11-07 06:45:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-11-07 06:45:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-11-07 06:45:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-11-07 06:45:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-11-07 06:45:06,282 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-11-07 06:45:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:45:06,282 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-11-07 06:45:06,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 06:45:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-11-07 06:45:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-11-07 06:45:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:45:06,285 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:45:06,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 06:45:06,286 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:45:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:45:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash -435731172, now seen corresponding path program 36 times [2020-11-07 06:45:06,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:45:06,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442313571] [2020-11-07 06:45:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:45:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:45:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:45:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:45:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:45:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:45:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:45:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:45:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:45:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:45:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:45:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:45:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:45:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:45:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:45:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:45:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:45:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:45:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:45:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:45:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:45:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:45:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:45:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:45:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:45:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:45:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:45:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:45:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:45:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:45:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:45:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:45:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:45:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:45:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:45:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:45:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:10,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:45:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 72 proven. 3222 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-11-07 06:45:11,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442313571] [2020-11-07 06:45:11,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:11,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-11-07 06:45:11,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671722543] [2020-11-07 06:45:11,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-07 06:45:11,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-07 06:45:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=4557, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 06:45:11,028 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 78 states. [2020-11-07 06:45:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:45:29,022 INFO L93 Difference]: Finished difference Result 362 states and 362 transitions. [2020-11-07 06:45:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-11-07 06:45:29,024 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 344 [2020-11-07 06:45:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:45:29,026 INFO L225 Difference]: With dead ends: 362 [2020-11-07 06:45:29,026 INFO L226 Difference]: Without dead ends: 358 [2020-11-07 06:45:29,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=9784, Invalid=26126, Unknown=0, NotChecked=0, Total=35910 [2020-11-07 06:45:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-07 06:45:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-11-07 06:45:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-11-07 06:45:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-11-07 06:45:29,096 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-11-07 06:45:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:45:29,097 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-11-07 06:45:29,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-07 06:45:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-11-07 06:45:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-11-07 06:45:29,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:45:29,100 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:45:29,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 06:45:29,101 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:45:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:45:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1811104017, now seen corresponding path program 37 times [2020-11-07 06:45:29,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:45:29,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942869727] [2020-11-07 06:45:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:45:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:45:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:45:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:45:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:45:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:45:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:45:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:45:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:45:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:45:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:45:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:45:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:45:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:45:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:45:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:45:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:45:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:45:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:45:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:45:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:45:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:45:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:45:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:45:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:45:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:45:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:45:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:45:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:45:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:45:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:45:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:45:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:45:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:45:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:45:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:45:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:45:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:45:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 74 proven. 3404 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-11-07 06:45:34,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942869727] [2020-11-07 06:45:34,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:34,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-11-07 06:45:34,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306660031] [2020-11-07 06:45:34,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-07 06:45:34,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-07 06:45:34,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1526, Invalid=4794, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 06:45:34,340 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 80 states. [2020-11-07 06:45:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:45:53,992 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2020-11-07 06:45:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-11-07 06:45:53,994 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 353 [2020-11-07 06:45:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:45:53,997 INFO L225 Difference]: With dead ends: 371 [2020-11-07 06:45:53,997 INFO L226 Difference]: Without dead ends: 367 [2020-11-07 06:45:54,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8771 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=10314, Invalid=27516, Unknown=0, NotChecked=0, Total=37830 [2020-11-07 06:45:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-11-07 06:45:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-11-07 06:45:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-11-07 06:45:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-11-07 06:45:54,062 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-11-07 06:45:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:45:54,063 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-11-07 06:45:54,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-07 06:45:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-11-07 06:45:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-11-07 06:45:54,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:45:54,066 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:45:54,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 06:45:54,067 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:45:54,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:45:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash -358112644, now seen corresponding path program 38 times [2020-11-07 06:45:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:45:54,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177183549] [2020-11-07 06:45:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:45:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:45:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:45:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:45:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:45:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:45:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:45:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:45:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:45:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:45:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:45:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:45:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:45:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:45:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:45:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:45:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:45:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:45:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:45:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:45:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:45:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:45:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:45:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:45:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:45:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:45:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:45:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:45:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:45:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:45:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:45:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:45:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:45:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:45:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:45:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:45:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:45:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:45:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:45:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 76 proven. 3591 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-11-07 06:45:59,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177183549] [2020-11-07 06:45:59,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:59,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-11-07 06:45:59,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358281914] [2020-11-07 06:45:59,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-07 06:45:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-07 06:45:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1605, Invalid=5037, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 06:45:59,837 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 82 states. [2020-11-07 06:46:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:21,440 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2020-11-07 06:46:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-11-07 06:46:21,442 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 362 [2020-11-07 06:46:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:21,444 INFO L225 Difference]: With dead ends: 380 [2020-11-07 06:46:21,444 INFO L226 Difference]: Without dead ends: 376 [2020-11-07 06:46:21,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9236 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=10858, Invalid=28942, Unknown=0, NotChecked=0, Total=39800 [2020-11-07 06:46:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-11-07 06:46:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-11-07 06:46:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-11-07 06:46:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-11-07 06:46:21,519 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-11-07 06:46:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:21,519 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-11-07 06:46:21,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-07 06:46:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-11-07 06:46:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-11-07 06:46:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:21,523 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:21,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 06:46:21,523 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 219114895, now seen corresponding path program 39 times [2020-11-07 06:46:21,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:21,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647800548] [2020-11-07 06:46:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:46:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:46:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:46:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:46:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:46:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:46:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:46:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:46:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:46:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:46:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:46:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:46:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:46:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:46:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:46:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:46:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:46:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:46:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:46:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:46:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:46:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:46:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:46:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:46:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:46:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:46:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:46:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:46:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:46:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:46:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:46:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:46:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:46:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:46:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:46:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:46:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:46:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:46:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:46:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:46:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6825 backedges. 78 proven. 3783 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-11-07 06:46:27,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647800548] [2020-11-07 06:46:27,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:46:27,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-11-07 06:46:27,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428199475] [2020-11-07 06:46:27,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-07 06:46:27,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:46:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-07 06:46:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1686, Invalid=5286, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 06:46:27,823 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 84 states. [2020-11-07 06:46:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:50,508 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2020-11-07 06:46:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-11-07 06:46:50,510 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 371 [2020-11-07 06:46:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:50,513 INFO L225 Difference]: With dead ends: 389 [2020-11-07 06:46:50,513 INFO L226 Difference]: Without dead ends: 385 [2020-11-07 06:46:50,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9713 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=11416, Invalid=30404, Unknown=0, NotChecked=0, Total=41820 [2020-11-07 06:46:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-11-07 06:46:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-11-07 06:46:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-11-07 06:46:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-11-07 06:46:50,627 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-11-07 06:46:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:50,628 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-11-07 06:46:50,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-07 06:46:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-11-07 06:46:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-11-07 06:46:50,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:50,632 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:50,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 06:46:50,633 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:50,633 INFO L82 PathProgramCache]: Analyzing trace with hash 212821980, now seen corresponding path program 40 times [2020-11-07 06:46:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:50,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66887544] [2020-11-07 06:46:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:46:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:46:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:46:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:46:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:46:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:46:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:46:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:46:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:46:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:46:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:46:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:46:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:46:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:46:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:46:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:46:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:46:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:46:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:46:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:46:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:46:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:46:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:46:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:46:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:46:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:46:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:46:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:46:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:46:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:46:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:46:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:46:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:46:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:46:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:46:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:46:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:46:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:46:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:46:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:46:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:46:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 80 proven. 3980 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-11-07 06:46:57,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66887544] [2020-11-07 06:46:57,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:46:57,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-11-07 06:46:57,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060822456] [2020-11-07 06:46:57,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-07 06:46:57,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:46:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-07 06:46:57,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1769, Invalid=5541, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 06:46:57,698 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 86 states. [2020-11-07 06:47:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:47:21,443 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2020-11-07 06:47:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-11-07 06:47:21,445 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 380 [2020-11-07 06:47:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:47:21,447 INFO L225 Difference]: With dead ends: 398 [2020-11-07 06:47:21,447 INFO L226 Difference]: Without dead ends: 394 [2020-11-07 06:47:21,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10202 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=11988, Invalid=31902, Unknown=0, NotChecked=0, Total=43890 [2020-11-07 06:47:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-07 06:47:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-11-07 06:47:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-11-07 06:47:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-11-07 06:47:21,519 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-11-07 06:47:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:47:21,520 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-11-07 06:47:21,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-07 06:47:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-11-07 06:47:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-11-07 06:47:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:47:21,523 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:47:21,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-07 06:47:21,524 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:47:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:47:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1652536367, now seen corresponding path program 41 times [2020-11-07 06:47:21,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:47:21,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128042555] [2020-11-07 06:47:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:47:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:47:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:47:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:47:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:47:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:47:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:47:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:47:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:47:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:47:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:47:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:47:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:47:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:47:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:47:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:47:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:47:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:47:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:47:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:47:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:47:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:47:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:47:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:47:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:47:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:47:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:47:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:47:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:47:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:47:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:47:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:47:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:47:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:47:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:47:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:47:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:47:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:47:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:47:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:47:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:47:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:47:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:47:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7544 backedges. 82 proven. 4182 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-11-07 06:47:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128042555] [2020-11-07 06:47:27,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:47:27,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-11-07 06:47:27,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569138570] [2020-11-07 06:47:27,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-07 06:47:27,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:47:27,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-07 06:47:27,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1854, Invalid=5802, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 06:47:27,973 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 88 states. [2020-11-07 06:47:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:47:51,460 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2020-11-07 06:47:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-11-07 06:47:51,461 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 389 [2020-11-07 06:47:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:47:51,463 INFO L225 Difference]: With dead ends: 407 [2020-11-07 06:47:51,464 INFO L226 Difference]: Without dead ends: 403 [2020-11-07 06:47:51,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10703 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=12574, Invalid=33436, Unknown=0, NotChecked=0, Total=46010 [2020-11-07 06:47:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-07 06:47:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-11-07 06:47:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-11-07 06:47:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-11-07 06:47:51,542 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-11-07 06:47:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:47:51,543 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-11-07 06:47:51,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-07 06:47:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-11-07 06:47:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-11-07 06:47:51,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:47:51,546 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:47:51,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-07 06:47:51,546 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:47:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:47:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1743481540, now seen corresponding path program 42 times [2020-11-07 06:47:51,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:47:51,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751662518] [2020-11-07 06:47:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:47:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:47:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:47:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:47:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:47:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:47:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:47:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:47:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:47:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:47:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:47:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:47:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:47:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:47:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:47:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:47:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:47:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:47:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:47:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:47:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:47:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:47:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:47:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:47:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:47:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:47:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:47:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:47:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:47:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:47:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:47:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:47:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:47:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:47:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:47:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:47:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:47:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:47:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:47:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:47:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:47:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:47:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:47:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:47:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7917 backedges. 84 proven. 4389 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2020-11-07 06:47:58,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751662518] [2020-11-07 06:47:58,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:47:58,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-11-07 06:47:58,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892300823] [2020-11-07 06:47:58,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-07 06:47:58,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:47:58,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-07 06:47:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1941, Invalid=6069, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 06:47:58,501 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 90 states. [2020-11-07 06:48:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:23,236 INFO L93 Difference]: Finished difference Result 416 states and 416 transitions. [2020-11-07 06:48:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-11-07 06:48:23,238 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 398 [2020-11-07 06:48:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:23,240 INFO L225 Difference]: With dead ends: 416 [2020-11-07 06:48:23,240 INFO L226 Difference]: Without dead ends: 412 [2020-11-07 06:48:23,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11216 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=13174, Invalid=35006, Unknown=0, NotChecked=0, Total=48180 [2020-11-07 06:48:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-07 06:48:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-11-07 06:48:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-11-07 06:48:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-11-07 06:48:23,293 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-11-07 06:48:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:23,293 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-11-07 06:48:23,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-07 06:48:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-11-07 06:48:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-11-07 06:48:23,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:23,297 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:23,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-11-07 06:48:23,297 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1562874575, now seen corresponding path program 43 times [2020-11-07 06:48:23,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:23,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466443790] [2020-11-07 06:48:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:48:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:48:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:48:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:48:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:48:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:48:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:48:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:48:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:48:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:48:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:48:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:48:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:48:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:48:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:48:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:48:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:48:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:48:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:48:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:48:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:48:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:48:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:48:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:48:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:48:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:48:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:48:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:48:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:48:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:48:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:48:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:48:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:48:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:48:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:48:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:48:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:48:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:48:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:48:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:48:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:48:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:48:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:48:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:48:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8299 backedges. 86 proven. 4601 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-11-07 06:48:31,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466443790] [2020-11-07 06:48:31,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:48:31,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-11-07 06:48:31,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485519546] [2020-11-07 06:48:31,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-11-07 06:48:31,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:48:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-11-07 06:48:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2030, Invalid=6342, Unknown=0, NotChecked=0, Total=8372 [2020-11-07 06:48:31,090 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 92 states. [2020-11-07 06:48:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:58,304 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-11-07 06:48:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2020-11-07 06:48:58,307 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 407 [2020-11-07 06:48:58,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:58,310 INFO L225 Difference]: With dead ends: 425 [2020-11-07 06:48:58,310 INFO L226 Difference]: Without dead ends: 421 [2020-11-07 06:48:58,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11741 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=13788, Invalid=36612, Unknown=0, NotChecked=0, Total=50400 [2020-11-07 06:48:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-07 06:48:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-11-07 06:48:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-11-07 06:48:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-11-07 06:48:58,405 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-11-07 06:48:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:58,405 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-11-07 06:48:58,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-11-07 06:48:58,406 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-11-07 06:48:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-11-07 06:48:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:58,409 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:58,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-11-07 06:48:58,409 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash 122497692, now seen corresponding path program 44 times [2020-11-07 06:48:58,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:58,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979694786] [2020-11-07 06:48:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:49:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:49:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:49:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:49:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:49:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:49:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:49:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:49:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:49:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:49:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:49:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:49:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:49:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:49:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:49:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:49:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:49:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:49:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:49:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:49:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:49:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:49:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:49:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:49:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:49:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:49:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:49:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:49:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:49:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:49:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:49:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:49:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:49:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:49:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:49:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:49:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:49:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:49:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:49:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:49:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:49:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:49:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:49:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:49:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8690 backedges. 88 proven. 4818 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2020-11-07 06:49:06,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979694786] [2020-11-07 06:49:06,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:06,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-11-07 06:49:06,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951451387] [2020-11-07 06:49:06,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-11-07 06:49:06,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:06,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-11-07 06:49:06,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2121, Invalid=6621, Unknown=0, NotChecked=0, Total=8742 [2020-11-07 06:49:06,277 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 94 states. [2020-11-07 06:49:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:32,523 INFO L93 Difference]: Finished difference Result 434 states and 434 transitions. [2020-11-07 06:49:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2020-11-07 06:49:32,524 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 416 [2020-11-07 06:49:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:32,526 INFO L225 Difference]: With dead ends: 434 [2020-11-07 06:49:32,526 INFO L226 Difference]: Without dead ends: 430 [2020-11-07 06:49:32,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12278 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=14416, Invalid=38254, Unknown=0, NotChecked=0, Total=52670 [2020-11-07 06:49:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-11-07 06:49:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-11-07 06:49:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-11-07 06:49:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-11-07 06:49:32,580 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-11-07 06:49:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:32,581 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-11-07 06:49:32,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-11-07 06:49:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-11-07 06:49:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-11-07 06:49:32,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:32,584 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:49:32,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-11-07 06:49:32,584 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash -414119569, now seen corresponding path program 45 times [2020-11-07 06:49:32,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:32,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827356122] [2020-11-07 06:49:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:49:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:49:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:49:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:49:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:49:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:49:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:49:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:49:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:49:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:49:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:49:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:49:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:49:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:49:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:49:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:49:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:49:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:49:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:49:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:49:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:49:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:49:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:49:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:49:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:49:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:49:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:49:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:49:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:49:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:49:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:49:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:49:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:49:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:49:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:49:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:49:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:49:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:49:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:49:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:49:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:49:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:49:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:49:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:49:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:49:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 90 proven. 5040 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-11-07 06:49:41,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827356122] [2020-11-07 06:49:41,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:41,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2020-11-07 06:49:41,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569788220] [2020-11-07 06:49:41,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-11-07 06:49:41,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-11-07 06:49:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2214, Invalid=6906, Unknown=0, NotChecked=0, Total=9120 [2020-11-07 06:49:41,192 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 96 states. [2020-11-07 06:50:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:10,486 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2020-11-07 06:50:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2020-11-07 06:50:10,488 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 425 [2020-11-07 06:50:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:10,492 INFO L225 Difference]: With dead ends: 443 [2020-11-07 06:50:10,492 INFO L226 Difference]: Without dead ends: 439 [2020-11-07 06:50:10,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12827 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=15058, Invalid=39932, Unknown=0, NotChecked=0, Total=54990 [2020-11-07 06:50:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-07 06:50:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-11-07 06:50:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-11-07 06:50:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-11-07 06:50:10,575 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-11-07 06:50:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:10,576 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-11-07 06:50:10,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-11-07 06:50:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-11-07 06:50:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-11-07 06:50:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:10,579 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:10,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-11-07 06:50:10,580 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1666131964, now seen corresponding path program 46 times [2020-11-07 06:50:10,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:10,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472596603] [2020-11-07 06:50:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:50:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:50:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:50:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:50:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:50:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:50:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:50:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:50:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:50:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:50:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:50:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:50:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:50:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:50:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:50:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:50:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:50:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:50:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:50:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:50:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:50:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:50:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:50:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:50:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:50:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:50:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:50:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:50:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:50:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:50:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:50:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:50:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:50:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:50:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:50:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:50:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:50:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:50:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:50:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:50:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:50:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:50:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:50:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:50:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:50:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:50:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2020-11-07 06:50:19,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472596603] [2020-11-07 06:50:19,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:19,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2020-11-07 06:50:19,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592284366] [2020-11-07 06:50:19,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-11-07 06:50:19,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:19,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-11-07 06:50:19,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2309, Invalid=7197, Unknown=0, NotChecked=0, Total=9506 [2020-11-07 06:50:19,753 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 98 states. [2020-11-07 06:50:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:50,524 INFO L93 Difference]: Finished difference Result 452 states and 452 transitions. [2020-11-07 06:50:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2020-11-07 06:50:50,526 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 434 [2020-11-07 06:50:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:50,528 INFO L225 Difference]: With dead ends: 452 [2020-11-07 06:50:50,528 INFO L226 Difference]: Without dead ends: 448 [2020-11-07 06:50:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13388 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=15714, Invalid=41646, Unknown=0, NotChecked=0, Total=57360 [2020-11-07 06:50:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-11-07 06:50:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-11-07 06:50:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-07 06:50:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-11-07 06:50:50,588 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-11-07 06:50:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:50,588 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-11-07 06:50:50,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-11-07 06:50:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-11-07 06:50:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-11-07 06:50:50,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:50,592 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:50,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-11-07 06:50:50,592 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1396303857, now seen corresponding path program 47 times [2020-11-07 06:50:50,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:50,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403500155] [2020-11-07 06:50:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:50:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:50:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:50:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:50:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:50:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:50:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:50:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:50:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:50:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:50:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:50:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:50:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:50:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:50:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:50:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:50:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:50:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:50:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:50:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:50:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:50:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:50:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:50:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:50:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:50:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:50:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:50:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:50:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:50:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:50:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:50:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:50:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:50:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:50:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:50:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:50:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:50:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:50:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:50:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:50:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:50:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:50:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:50:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:50:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:50:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:50:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-11-07 06:50:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9917 backedges. 94 proven. 5499 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-11-07 06:50:59,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403500155] [2020-11-07 06:50:59,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:59,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2020-11-07 06:50:59,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283135719] [2020-11-07 06:50:59,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 100 states [2020-11-07 06:50:59,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:59,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2020-11-07 06:50:59,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2406, Invalid=7494, Unknown=0, NotChecked=0, Total=9900 [2020-11-07 06:50:59,641 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 100 states. [2020-11-07 06:51:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:51:32,170 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2020-11-07 06:51:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2020-11-07 06:51:32,172 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 443 [2020-11-07 06:51:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:51:32,175 INFO L225 Difference]: With dead ends: 461 [2020-11-07 06:51:32,175 INFO L226 Difference]: Without dead ends: 457 [2020-11-07 06:51:32,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=16384, Invalid=43396, Unknown=0, NotChecked=0, Total=59780 [2020-11-07 06:51:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-11-07 06:51:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-11-07 06:51:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-11-07 06:51:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-11-07 06:51:32,241 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-11-07 06:51:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:51:32,242 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-11-07 06:51:32,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 100 states. [2020-11-07 06:51:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-11-07 06:51:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-11-07 06:51:32,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:51:32,244 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:51:32,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-11-07 06:51:32,244 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:51:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:51:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1550807716, now seen corresponding path program 48 times [2020-11-07 06:51:32,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:51:32,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081861964] [2020-11-07 06:51:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:51:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:51:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:51:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:51:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:51:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:51:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:51:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:51:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:51:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:51:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:51:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:51:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:51:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:51:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:51:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:51:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:51:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:51:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:51:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:51:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:51:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:51:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:51:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:51:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:51:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:51:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:51:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:51:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:51:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:51:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:51:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:51:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:51:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:51:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:51:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:51:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:51:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:51:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:51:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:51:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:51:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:51:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:51:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:51:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:51:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:51:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:51:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:51:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-11-07 06:51:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:51:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10344 backedges. 96 proven. 5736 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2020-11-07 06:51:43,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081861964] [2020-11-07 06:51:43,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:51:43,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2020-11-07 06:51:43,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562426622] [2020-11-07 06:51:43,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2020-11-07 06:51:43,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:51:43,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2020-11-07 06:51:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2505, Invalid=7797, Unknown=0, NotChecked=0, Total=10302 [2020-11-07 06:51:43,849 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 102 states. [2020-11-07 06:52:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:52:20,342 INFO L93 Difference]: Finished difference Result 470 states and 470 transitions. [2020-11-07 06:52:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2020-11-07 06:52:20,345 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 452 [2020-11-07 06:52:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:52:20,348 INFO L225 Difference]: With dead ends: 470 [2020-11-07 06:52:20,349 INFO L226 Difference]: Without dead ends: 466 [2020-11-07 06:52:20,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14546 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=17068, Invalid=45182, Unknown=0, NotChecked=0, Total=62250 [2020-11-07 06:52:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-11-07 06:52:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-11-07 06:52:20,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-11-07 06:52:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-11-07 06:52:20,438 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-11-07 06:52:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:52:20,439 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-11-07 06:52:20,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2020-11-07 06:52:20,439 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-11-07 06:52:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-11-07 06:52:20,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:52:20,441 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:52:20,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-11-07 06:52:20,441 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:52:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:52:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1160724817, now seen corresponding path program 49 times [2020-11-07 06:52:20,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:52:20,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612746928] [2020-11-07 06:52:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:52:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:52:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:52:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:52:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:52:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:52:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:52:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:52:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:52:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:52:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:52:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:52:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:52:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:52:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:52:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:52:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:52:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:52:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:52:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:52:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:52:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:52:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:52:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:52:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:52:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:52:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:52:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:52:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:52:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:52:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:52:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:52:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:52:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:52:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:52:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:52:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:52:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:52:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:52:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:52:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:52:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:52:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:52:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:52:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:52:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:52:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:52:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:52:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-11-07 06:52:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:52:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-11-07 06:52:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:52:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10780 backedges. 98 proven. 5978 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-11-07 06:52:30,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612746928] [2020-11-07 06:52:30,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:52:30,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2020-11-07 06:52:30,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423893895] [2020-11-07 06:52:30,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-11-07 06:52:30,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:52:30,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-11-07 06:52:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2606, Invalid=8106, Unknown=0, NotChecked=0, Total=10712 [2020-11-07 06:52:30,954 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 104 states. [2020-11-07 06:53:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:53:06,189 INFO L93 Difference]: Finished difference Result 479 states and 479 transitions. [2020-11-07 06:53:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2020-11-07 06:53:06,191 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 461 [2020-11-07 06:53:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:53:06,193 INFO L225 Difference]: With dead ends: 479 [2020-11-07 06:53:06,194 INFO L226 Difference]: Without dead ends: 475 [2020-11-07 06:53:06,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15143 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=17766, Invalid=47004, Unknown=0, NotChecked=0, Total=64770 [2020-11-07 06:53:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-11-07 06:53:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-11-07 06:53:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-11-07 06:53:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-11-07 06:53:06,261 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-11-07 06:53:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:53:06,262 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-11-07 06:53:06,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-11-07 06:53:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-11-07 06:53:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-11-07 06:53:06,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:53:06,264 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:53:06,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-11-07 06:53:06,265 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:53:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:53:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 235363004, now seen corresponding path program 50 times [2020-11-07 06:53:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:53:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048992907] [2020-11-07 06:53:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:53:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:53:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 06:53:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-07 06:53:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 06:53:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 06:53:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 06:53:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:53:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-07 06:53:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:53:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-11-07 06:53:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:53:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 06:53:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:53:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 06:53:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:53:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-11-07 06:53:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:53:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-11-07 06:53:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:53:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-07 06:53:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:53:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 06:53:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:53:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 06:53:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:53:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-11-07 06:53:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:53:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-11-07 06:53:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:53:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-11-07 06:53:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:53:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-11-07 06:53:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:53:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 06:53:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:53:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-11-07 06:53:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:53:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-11-07 06:53:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:53:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-11-07 06:53:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:53:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-11-07 06:53:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:53:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-11-07 06:53:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:53:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-11-07 06:53:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:53:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-11-07 06:53:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:53:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-11-07 06:53:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:53:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:53:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 100 proven. 6225 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2020-11-07 06:53:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048992907] [2020-11-07 06:53:16,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:53:16,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2020-11-07 06:53:16,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244641608] [2020-11-07 06:53:16,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 106 states [2020-11-07 06:53:16,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:53:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2020-11-07 06:53:16,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2709, Invalid=8421, Unknown=0, NotChecked=0, Total=11130 [2020-11-07 06:53:16,779 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 106 states.