/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:53,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:53,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:53,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:53,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:53,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:53,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:53,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:53,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:53,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:53,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:53,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:53,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:53,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:53,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:53,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:53,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:53,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:53,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:53,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:53,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:53,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:53,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:53,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:53,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:53,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:53,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:53,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:53,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:53,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:53,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:53,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:53,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:53,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:53,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:53,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:53,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:53,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:53,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:53,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:53,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:53,595 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 09:01:53,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:53,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:53,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:53,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:53,647 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:53,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:53,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:53,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:53,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:53,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:53,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:53,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:53,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:53,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:53,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:53,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:53,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:53,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:53,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:53,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:53,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:53,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:53,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:53,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:53,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:53,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:53,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:53,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:53,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:53,653 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 09:01:54,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:54,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:54,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:54,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:54,144 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:54,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 09:01:54,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7f38bdba/7eedd80e026c4814a683c37be2978af2/FLAGca7a754ad [2020-09-25 09:01:54,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:54,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 09:01:54,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7f38bdba/7eedd80e026c4814a683c37be2978af2/FLAGca7a754ad [2020-09-25 09:01:55,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7f38bdba/7eedd80e026c4814a683c37be2978af2 [2020-09-25 09:01:55,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:55,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:55,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:55,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:55,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:55,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f81345b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55, skipping insertion in model container [2020-09-25 09:01:55,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:55,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:55,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:55,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:55,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:55,921 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:55,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55 WrapperNode [2020-09-25 09:01:55,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:55,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:55,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:55,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:55,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:55,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:56,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:56,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (1/1) ... [2020-09-25 09:01:56,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:56,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:56,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:56,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:56,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (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 09:01:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:57,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:57,481 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:57,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:57 BoogieIcfgContainer [2020-09-25 09:01:57,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:57,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:57,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:57,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:57,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:55" (1/3) ... [2020-09-25 09:01:57,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5634e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:57, skipping insertion in model container [2020-09-25 09:01:57,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:55" (2/3) ... [2020-09-25 09:01:57,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5634e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:57, skipping insertion in model container [2020-09-25 09:01:57,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:57" (3/3) ... [2020-09-25 09:01:57,512 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-25 09:01:57,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:57,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:57,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:57,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:57,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:57,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:57,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:57,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:57,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:57,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:57,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:01:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:01:57,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:57,673 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] [2020-09-25 09:01:57,673 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-25 09:01:57,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:57,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161547714] [2020-09-25 09:01:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:03,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:02:03,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:02:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:03,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:02:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:02:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:02:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:03,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:02:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:03,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:03,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:02:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:03,430 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 09:02:03,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161547714] [2020-09-25 09:02:03,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:03,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:02:03,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783143287] [2020-09-25 09:02:03,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:03,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:03,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:03,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:03,467 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 09:02:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:06,321 INFO L93 Difference]: Finished difference Result 1420 states and 2015 transitions. [2020-09-25 09:02:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:02:06,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 09:02:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:06,350 INFO L225 Difference]: With dead ends: 1420 [2020-09-25 09:02:06,350 INFO L226 Difference]: Without dead ends: 837 [2020-09-25 09:02:06,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-25 09:02:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 774. [2020-09-25 09:02:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-09-25 09:02:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 946 transitions. [2020-09-25 09:02:06,492 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 946 transitions. Word has length 165 [2020-09-25 09:02:06,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:06,493 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 946 transitions. [2020-09-25 09:02:06,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 946 transitions. [2020-09-25 09:02:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 09:02:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:06,503 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:02:06,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:06,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash 938728200, now seen corresponding path program 1 times [2020-09-25 09:02:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:06,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914515913] [2020-09-25 09:02:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:11,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 09:02:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-09-25 09:02:11,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:11,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:02:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:02:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:11,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:02:11,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:11,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:11,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:11,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:02:11,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:11,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:02:11,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:11,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:11,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:02:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:11,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914515913] [2020-09-25 09:02:11,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:11,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:11,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89127897] [2020-09-25 09:02:11,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:11,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:11,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:11,876 INFO L87 Difference]: Start difference. First operand 774 states and 946 transitions. Second operand 5 states. [2020-09-25 09:02:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:13,592 INFO L93 Difference]: Finished difference Result 1990 states and 2530 transitions. [2020-09-25 09:02:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:13,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-25 09:02:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:13,601 INFO L225 Difference]: With dead ends: 1990 [2020-09-25 09:02:13,601 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 09:02:13,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 09:02:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1228. [2020-09-25 09:02:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-09-25 09:02:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1542 transitions. [2020-09-25 09:02:13,650 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1542 transitions. Word has length 187 [2020-09-25 09:02:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:13,651 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1542 transitions. [2020-09-25 09:02:13,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1542 transitions. [2020-09-25 09:02:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 09:02:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:13,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2020-09-25 09:02:13,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:13,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 817937001, now seen corresponding path program 1 times [2020-09-25 09:02:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:13,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986626901] [2020-09-25 09:02:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 09:02:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:02:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:02:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 09:02:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 09:02:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:18,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:18,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:18,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:19,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:02:19,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:02:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:19,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:02:19,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:02:19,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:19,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:02:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:02:19,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986626901] [2020-09-25 09:02:19,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:19,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:02:19,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323570491] [2020-09-25 09:02:19,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:02:19,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:02:19,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:02:19,717 INFO L87 Difference]: Start difference. First operand 1228 states and 1542 transitions. Second operand 9 states. [2020-09-25 09:02:24,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:24,154 INFO L93 Difference]: Finished difference Result 3304 states and 4293 transitions. [2020-09-25 09:02:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:02:24,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2020-09-25 09:02:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:24,172 INFO L225 Difference]: With dead ends: 3304 [2020-09-25 09:02:24,172 INFO L226 Difference]: Without dead ends: 1990 [2020-09-25 09:02:24,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:02:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-09-25 09:02:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1980. [2020-09-25 09:02:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 09:02:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2337 transitions. [2020-09-25 09:02:24,260 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2337 transitions. Word has length 229 [2020-09-25 09:02:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:24,261 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2337 transitions. [2020-09-25 09:02:24,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:02:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2337 transitions. [2020-09-25 09:02:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 09:02:24,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:24,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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, 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] [2020-09-25 09:02:24,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:24,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash 865061289, now seen corresponding path program 1 times [2020-09-25 09:02:24,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:24,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007862043] [2020-09-25 09:02:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-09-25 09:02:29,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:02:29,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 09:02:29,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:29,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:02:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-09-25 09:02:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:02:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:02:29,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:02:29,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:29,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 09:02:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:02:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:02:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:02:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:02:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:02:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 09:02:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:02:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 09:02:30,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007862043] [2020-09-25 09:02:30,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:30,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:02:30,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122674091] [2020-09-25 09:02:30,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:02:30,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:02:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:30,098 INFO L87 Difference]: Start difference. First operand 1980 states and 2337 transitions. Second operand 6 states. [2020-09-25 09:02:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:32,070 INFO L93 Difference]: Finished difference Result 5490 states and 6668 transitions. [2020-09-25 09:02:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:02:32,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2020-09-25 09:02:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:32,088 INFO L225 Difference]: With dead ends: 5490 [2020-09-25 09:02:32,089 INFO L226 Difference]: Without dead ends: 3376 [2020-09-25 09:02:32,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-09-25 09:02:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3244. [2020-09-25 09:02:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-09-25 09:02:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 3941 transitions. [2020-09-25 09:02:32,202 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 3941 transitions. Word has length 306 [2020-09-25 09:02:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:32,203 INFO L479 AbstractCegarLoop]: Abstraction has 3244 states and 3941 transitions. [2020-09-25 09:02:32,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:02:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 3941 transitions. [2020-09-25 09:02:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 09:02:32,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:32,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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] [2020-09-25 09:02:32,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:32,223 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash -93889228, now seen corresponding path program 1 times [2020-09-25 09:02:32,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:32,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011469039] [2020-09-25 09:02:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-25 09:02:37,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:02:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:37,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 09:02:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 09:02:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:02:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:37,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:37,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:02:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:37,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 09:02:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:37,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 09:02:37,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 09:02:37,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:37,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:02:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-25 09:02:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:37,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:02:37,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 09:02:37,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:37,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:02:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 09:02:37,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011469039] [2020-09-25 09:02:37,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:37,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:02:37,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273554981] [2020-09-25 09:02:37,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:02:37,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:02:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:37,993 INFO L87 Difference]: Start difference. First operand 3244 states and 3941 transitions. Second operand 7 states. [2020-09-25 09:02:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:40,843 INFO L93 Difference]: Finished difference Result 7987 states and 10129 transitions. [2020-09-25 09:02:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:02:40,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-09-25 09:02:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:40,845 INFO L225 Difference]: With dead ends: 7987 [2020-09-25 09:02:40,845 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:02:40,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:02:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:02:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:02:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:02:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:02:40,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 319 [2020-09-25 09:02:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:40,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:02:40,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:02:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:02:40,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:02:40,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:40,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.