/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:16,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:16,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:16,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:16,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:16,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:16,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:16,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:16,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:16,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:16,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:16,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:16,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:16,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:16,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:16,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:16,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:16,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:16,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:16,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:16,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:16,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:16,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:16,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:16,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:16,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:16,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:16,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:16,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:16,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:16,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:16,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:17,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:17,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:17,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:17,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:17,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:17,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:17,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:17,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:17,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:17,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:57:17,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:17,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:17,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:17,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:17,058 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:17,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:17,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:17,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:17,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:17,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:17,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:17,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:17,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:17,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:17,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:17,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:17,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:17,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:17,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:17,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:17,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:17,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:17,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:17,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:17,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:17,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:17,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:17,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:17,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:17,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:17,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:17,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:17,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:17,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:17,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:17,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 22:57:17,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93277a437/bf2978329f1a45a294422198c3ff43af/FLAGfde349bf0 [2020-09-24 22:57:18,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:18,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2020-09-24 22:57:18,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93277a437/bf2978329f1a45a294422198c3ff43af/FLAGfde349bf0 [2020-09-24 22:57:18,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93277a437/bf2978329f1a45a294422198c3ff43af [2020-09-24 22:57:18,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:18,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:18,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:18,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:18,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:18,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2759ebc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18, skipping insertion in model container [2020-09-24 22:57:18,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:18,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:19,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:19,202 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:19,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:19,335 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:19,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19 WrapperNode [2020-09-24 22:57:19,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:19,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:19,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:19,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:19,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... [2020-09-24 22:57:19,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:19,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:19,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:19,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:19,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 22:57:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-24 22:57:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 22:57:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:57:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:57:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:57:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:57:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 22:57:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:57:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:57:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:57:20,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:20,934 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:57:20,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:20 BoogieIcfgContainer [2020-09-24 22:57:20,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:20,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:20,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:20,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:18" (1/3) ... [2020-09-24 22:57:20,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6274635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:20, skipping insertion in model container [2020-09-24 22:57:20,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:19" (2/3) ... [2020-09-24 22:57:20,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6274635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:20, skipping insertion in model container [2020-09-24 22:57:20,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:20" (3/3) ... [2020-09-24 22:57:20,962 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2020-09-24 22:57:20,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:20,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:21,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:21,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:21,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:21,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:21,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:21,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:21,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:21,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:21,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2020-09-24 22:57:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-24 22:57:21,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:21,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:21,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -378957588, now seen corresponding path program 1 times [2020-09-24 22:57:21,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129444591] [2020-09-24 22:57:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:26,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-09-24 22:57:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-09-24 22:57:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:57:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 22:57:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-24 22:57:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:57:27,604 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 22:57:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:57:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 22:57:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:28,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129444591] [2020-09-24 22:57:28,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:28,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 22:57:28,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845491872] [2020-09-24 22:57:28,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:57:28,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:28,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:57:28,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:57:28,154 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 14 states. [2020-09-24 22:57:28,462 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 22:57:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:31,342 INFO L93 Difference]: Finished difference Result 806 states and 850 transitions. [2020-09-24 22:57:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:57:31,344 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 488 [2020-09-24 22:57:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:31,380 INFO L225 Difference]: With dead ends: 806 [2020-09-24 22:57:31,380 INFO L226 Difference]: Without dead ends: 532 [2020-09-24 22:57:31,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:57:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-09-24 22:57:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 512. [2020-09-24 22:57:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-09-24 22:57:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 512 transitions. [2020-09-24 22:57:31,513 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 512 transitions. Word has length 488 [2020-09-24 22:57:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:31,518 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 512 transitions. [2020-09-24 22:57:31,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:57:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 512 transitions. [2020-09-24 22:57:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-09-24 22:57:31,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:31,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:31,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:57:31,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:31,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1127244588, now seen corresponding path program 1 times [2020-09-24 22:57:31,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:31,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773227123] [2020-09-24 22:57:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:36,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-09-24 22:57:36,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-09-24 22:57:36,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:57:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 22:57:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 22:57:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:37,566 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 22:57:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:57:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 22:57:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:57:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:38,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773227123] [2020-09-24 22:57:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:38,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 22:57:38,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10943270] [2020-09-24 22:57:38,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:57:38,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:38,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:57:38,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:57:38,397 INFO L87 Difference]: Start difference. First operand 512 states and 512 transitions. Second operand 15 states. [2020-09-24 22:57:38,643 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-09-24 22:57:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:40,847 INFO L93 Difference]: Finished difference Result 563 states and 563 transitions. [2020-09-24 22:57:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:57:40,849 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 511 [2020-09-24 22:57:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:40,853 INFO L225 Difference]: With dead ends: 563 [2020-09-24 22:57:40,853 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 22:57:40,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-09-24 22:57:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 22:57:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 535. [2020-09-24 22:57:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-09-24 22:57:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 535 transitions. [2020-09-24 22:57:40,868 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 535 transitions. Word has length 511 [2020-09-24 22:57:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:40,871 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 535 transitions. [2020-09-24 22:57:40,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:57:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 535 transitions. [2020-09-24 22:57:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-09-24 22:57:40,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:40,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:40,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:57:40,882 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:40,883 INFO L82 PathProgramCache]: Analyzing trace with hash -382293012, now seen corresponding path program 2 times [2020-09-24 22:57:40,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:40,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971149529] [2020-09-24 22:57:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:46,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:46,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-09-24 22:57:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-24 22:57:46,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:57:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 22:57:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-09-24 22:57:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:46,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:46,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:57:46,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 22:57:46,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:46,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:46,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:47,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971149529] [2020-09-24 22:57:47,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:47,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:57:47,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932543468] [2020-09-24 22:57:47,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:57:47,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:57:47,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:57:47,242 INFO L87 Difference]: Start difference. First operand 535 states and 535 transitions. Second operand 16 states. [2020-09-24 22:57:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:49,930 INFO L93 Difference]: Finished difference Result 586 states and 586 transitions. [2020-09-24 22:57:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:57:49,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 534 [2020-09-24 22:57:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:49,935 INFO L225 Difference]: With dead ends: 586 [2020-09-24 22:57:49,935 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 22:57:49,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-09-24 22:57:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 22:57:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 558. [2020-09-24 22:57:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-24 22:57:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 558 transitions. [2020-09-24 22:57:49,949 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 558 transitions. Word has length 534 [2020-09-24 22:57:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 558 transitions. [2020-09-24 22:57:49,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:57:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 558 transitions. [2020-09-24 22:57:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-09-24 22:57:49,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:49,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:49,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:57:49,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1886659028, now seen corresponding path program 3 times [2020-09-24 22:57:49,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:49,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545121181] [2020-09-24 22:57:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:55,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:55,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-09-24 22:57:55,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-09-24 22:57:55,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:57:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-24 22:57:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-09-24 22:57:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:56,019 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 22:57:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:57:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 22:57:56,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:56,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545121181] [2020-09-24 22:57:56,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:56,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:57:56,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597820977] [2020-09-24 22:57:56,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:57:56,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:57:56,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:57:56,932 INFO L87 Difference]: Start difference. First operand 558 states and 558 transitions. Second operand 17 states. [2020-09-24 22:57:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:59,946 INFO L93 Difference]: Finished difference Result 609 states and 609 transitions. [2020-09-24 22:57:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:57:59,947 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 557 [2020-09-24 22:57:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:59,956 INFO L225 Difference]: With dead ends: 609 [2020-09-24 22:57:59,957 INFO L226 Difference]: Without dead ends: 601 [2020-09-24 22:57:59,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:57:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-24 22:57:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2020-09-24 22:57:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-09-24 22:57:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 581 transitions. [2020-09-24 22:57:59,985 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 581 transitions. Word has length 557 [2020-09-24 22:57:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:59,986 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 581 transitions. [2020-09-24 22:57:59,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:57:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 581 transitions. [2020-09-24 22:57:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-09-24 22:57:59,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:59,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:59,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:57:59,992 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash 743212780, now seen corresponding path program 4 times [2020-09-24 22:57:59,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:59,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008281168] [2020-09-24 22:57:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking...