/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:02:55,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:02:55,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:02:55,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:02:55,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:02:55,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:02:55,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:02:55,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:02:55,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:02:55,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:02:55,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:02:55,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:02:55,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:02:55,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:02:55,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:02:55,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:02:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:02:55,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:02:55,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:02:55,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:02:55,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:02:55,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:02:55,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:02:55,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:02:55,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:02:55,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:02:55,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:02:55,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:02:55,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:02:55,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:02:55,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:02:55,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:02:55,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:02:55,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:02:55,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:02:55,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:02:55,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:02:55,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:02:55,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:02:55,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:02:55,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:02:55,529 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 [2020-09-25 09:02:55,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:02:55,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:02:55,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:02:55,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:02:55,579 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:02:55,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:02:55,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:02:55,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:02:55,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:02:55,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:02:55,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:02:55,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:02:55,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:02:55,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:02:55,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:02:55,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:02:55,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:02:55,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:02:55,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:02:55,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:02:55,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:02:55,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:02:55,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:02:55,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:02:55,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:02:55,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:02:55,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:02:55,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:02:55,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:02:55,585 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:02:56,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:02:56,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:02:56,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:02:56,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:02:56,055 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:02:56,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 09:02:56,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22074c33/cd7ba1dc154c4f4f969768dd3759a9b0/FLAG49f6ac68a [2020-09-25 09:02:56,797 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:02:56,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 09:02:56,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22074c33/cd7ba1dc154c4f4f969768dd3759a9b0/FLAG49f6ac68a [2020-09-25 09:02:57,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22074c33/cd7ba1dc154c4f4f969768dd3759a9b0 [2020-09-25 09:02:57,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:02:57,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:02:57,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:57,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:02:57,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:02:57,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57, skipping insertion in model container [2020-09-25 09:02:57,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:02:57,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:02:57,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:57,612 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:02:57,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:57,909 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:02:57,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57 WrapperNode [2020-09-25 09:02:57,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:57,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:02:57,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:02:57,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:02:57,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:57,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:58,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:58,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (1/1) ... [2020-09-25 09:02:58,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:02:58,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:02:58,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:02:58,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:02:58,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (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 [2020-09-25 09:02:58,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:02:58,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:02:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:02:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:02:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:02:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:02:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:02:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:02:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:02:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:02:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:02:59,598 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:02:59,598 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:02:59,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:59 BoogieIcfgContainer [2020-09-25 09:02:59,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:02:59,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:02:59,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:02:59,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:02:59,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:02:57" (1/3) ... [2020-09-25 09:02:59,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:59, skipping insertion in model container [2020-09-25 09:02:59,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:57" (2/3) ... [2020-09-25 09:02:59,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:59, skipping insertion in model container [2020-09-25 09:02:59,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:59" (3/3) ... [2020-09-25 09:02:59,617 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2020-09-25 09:02:59,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:02:59,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:02:59,664 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:02:59,703 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:02:59,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:02:59,703 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:02:59,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:02:59,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:02:59,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:02:59,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:02:59,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:02:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:02:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:02:59,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:59,778 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] [2020-09-25 09:02:59,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:59,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:59,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1105966209, now seen corresponding path program 1 times [2020-09-25 09:02:59,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:59,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 09:02:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:05,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 09:03:05,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:03:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:03:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:05,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:03:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:03:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:03:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:03:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:03:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:05,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 09:03:05,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:05,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:05,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095327029] [2020-09-25 09:03:05,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:05,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:05,435 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:07,837 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 09:03:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:07,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 09:03:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:07,865 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 09:03:07,865 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 09:03:07,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 09:03:07,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 09:03:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 09:03:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 09:03:07,986 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 150 [2020-09-25 09:03:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:07,988 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 09:03:07,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 09:03:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 09:03:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:07,997 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:03:07,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:07,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash 93952890, now seen corresponding path program 1 times [2020-09-25 09:03:07,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:07,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733236669] [2020-09-25 09:03:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 09:03:13,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:03:13,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:03:13,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:13,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:03:13,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 09:03:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:13,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:03:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:13,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:03:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:03:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:13,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:03:13,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 09:03:13,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:13,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:03:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:03:13,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733236669] [2020-09-25 09:03:13,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:13,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:03:13,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115236258] [2020-09-25 09:03:13,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:13,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:13,433 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 7 states. [2020-09-25 09:03:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:15,498 INFO L93 Difference]: Finished difference Result 1557 states and 1889 transitions. [2020-09-25 09:03:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:03:15,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 09:03:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:15,514 INFO L225 Difference]: With dead ends: 1557 [2020-09-25 09:03:15,514 INFO L226 Difference]: Without dead ends: 958 [2020-09-25 09:03:15,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:03:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-09-25 09:03:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 774. [2020-09-25 09:03:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-09-25 09:03:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 956 transitions. [2020-09-25 09:03:15,578 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 956 transitions. Word has length 167 [2020-09-25 09:03:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:15,579 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 956 transitions. [2020-09-25 09:03:15,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 956 transitions. [2020-09-25 09:03:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:03:15,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:15,585 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:03:15,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:15,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash -513304486, now seen corresponding path program 1 times [2020-09-25 09:03:15,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:15,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556580353] [2020-09-25 09:03:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:20,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:03:20,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 09:03:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:20,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:03:20,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:20,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:20,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:03:20,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:03:20,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:20,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556580353] [2020-09-25 09:03:20,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:20,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:20,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681604684] [2020-09-25 09:03:20,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:20,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:20,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:20,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:20,823 INFO L87 Difference]: Start difference. First operand 774 states and 956 transitions. Second operand 5 states. [2020-09-25 09:03:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:23,224 INFO L93 Difference]: Finished difference Result 2091 states and 2676 transitions. [2020-09-25 09:03:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:23,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 09:03:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:23,234 INFO L225 Difference]: With dead ends: 2091 [2020-09-25 09:03:23,234 INFO L226 Difference]: Without dead ends: 1339 [2020-09-25 09:03:23,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-09-25 09:03:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1242. [2020-09-25 09:03:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-09-25 09:03:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1565 transitions. [2020-09-25 09:03:23,282 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1565 transitions. Word has length 176 [2020-09-25 09:03:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:23,283 INFO L479 AbstractCegarLoop]: Abstraction has 1242 states and 1565 transitions. [2020-09-25 09:03:23,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1565 transitions. [2020-09-25 09:03:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 09:03:23,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:23,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:23,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:23,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:23,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1954637387, now seen corresponding path program 1 times [2020-09-25 09:03:23,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:23,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172144265] [2020-09-25 09:03:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 09:03:28,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:03:28,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:03:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:03:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:03:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:03:28,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:03:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:03:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:03:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:28,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:28,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:03:28,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 09:03:28,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:28,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:03:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:03:28,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172144265] [2020-09-25 09:03:28,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:28,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:03:28,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731331127] [2020-09-25 09:03:28,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:28,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:28,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:28,660 INFO L87 Difference]: Start difference. First operand 1242 states and 1565 transitions. Second operand 7 states. [2020-09-25 09:03:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:30,962 INFO L93 Difference]: Finished difference Result 2642 states and 3350 transitions. [2020-09-25 09:03:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:30,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 09:03:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:30,972 INFO L225 Difference]: With dead ends: 2642 [2020-09-25 09:03:30,972 INFO L226 Difference]: Without dead ends: 1422 [2020-09-25 09:03:30,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:03:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2020-09-25 09:03:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1178. [2020-09-25 09:03:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-09-25 09:03:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1404 transitions. [2020-09-25 09:03:31,033 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1404 transitions. Word has length 201 [2020-09-25 09:03:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:31,033 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1404 transitions. [2020-09-25 09:03:31,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1404 transitions. [2020-09-25 09:03:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 09:03:31,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:31,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:31,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:31,042 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1129148194, now seen corresponding path program 1 times [2020-09-25 09:03:31,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:31,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870044721] [2020-09-25 09:03:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 09:03:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 09:03:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:03:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:36,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:36,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:03:36,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:36,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:36,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:03:36,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:03:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:36,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:03:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:03:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:03:36,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:36,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:03:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 09:03:36,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870044721] [2020-09-25 09:03:36,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:36,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:36,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684729309] [2020-09-25 09:03:36,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:36,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:36,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:36,467 INFO L87 Difference]: Start difference. First operand 1178 states and 1404 transitions. Second operand 5 states. [2020-09-25 09:03:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:38,579 INFO L93 Difference]: Finished difference Result 3102 states and 3839 transitions. [2020-09-25 09:03:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:38,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-09-25 09:03:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:38,590 INFO L225 Difference]: With dead ends: 3102 [2020-09-25 09:03:38,590 INFO L226 Difference]: Without dead ends: 1946 [2020-09-25 09:03:38,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2020-09-25 09:03:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1776. [2020-09-25 09:03:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-09-25 09:03:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2068 transitions. [2020-09-25 09:03:38,652 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2068 transitions. Word has length 206 [2020-09-25 09:03:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:38,653 INFO L479 AbstractCegarLoop]: Abstraction has 1776 states and 2068 transitions. [2020-09-25 09:03:38,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2068 transitions. [2020-09-25 09:03:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 09:03:38,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:38,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:38,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:03:38,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash -384198663, now seen corresponding path program 1 times [2020-09-25 09:03:38,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:38,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416768618] [2020-09-25 09:03:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 09:03:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 09:03:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:44,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:44,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:03:44,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:44,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:44,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:44,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:03:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:44,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:03:44,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 09:03:44,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:44,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:03:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:03:44,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:03:44,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416768618] [2020-09-25 09:03:44,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:44,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:03:44,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804362584] [2020-09-25 09:03:44,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:44,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:44,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:44,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:44,306 INFO L87 Difference]: Start difference. First operand 1776 states and 2068 transitions. Second operand 7 states.