/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:33,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:33,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:33,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:33,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:33,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:33,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:33,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:33,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:33,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:33,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:33,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:33,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:33,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:33,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:33,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:33,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:33,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:33,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:33,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:33,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:33,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:33,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:33,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:33,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:33,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:33,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:33,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:33,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:33,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:33,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:33,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:33,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:33,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:33,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:33,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:33,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:33,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:33,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:33,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:33,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:33,827 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 10:06:33,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:33,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:33,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:33,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:33,860 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:33,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:33,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:33,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:33,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:33,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:33,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:33,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:33,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:33,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:33,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:33,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:33,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:33,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:33,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:33,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:33,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:33,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:33,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:33,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:33,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:33,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:33,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:33,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:33,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:33,866 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:06:34,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:34,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:34,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:34,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:34,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:34,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 10:06:34,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2f87d84f/36477051c0964546a7ab0bc5cce88ad9/FLAGaabb27655 [2020-09-25 10:06:35,136 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:35,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 10:06:35,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2f87d84f/36477051c0964546a7ab0bc5cce88ad9/FLAGaabb27655 [2020-09-25 10:06:35,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2f87d84f/36477051c0964546a7ab0bc5cce88ad9 [2020-09-25 10:06:35,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:35,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:35,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:35,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:35,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:35,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:35" (1/1) ... [2020-09-25 10:06:35,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a88db97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:35, skipping insertion in model container [2020-09-25 10:06:35,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:35" (1/1) ... [2020-09-25 10:06:35,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:35,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:35,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:35,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:36,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:36,286 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:36,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36 WrapperNode [2020-09-25 10:06:36,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:36,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:36,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:36,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:36,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (1/1) ... [2020-09-25 10:06:36,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:36,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:36,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:36,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:36,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (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 10:06:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:36,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:36,541 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:36,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:36,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:36,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:36,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:37,895 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:37,896 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:37,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:37 BoogieIcfgContainer [2020-09-25 10:06:37,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:37,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:37,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:37,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:37,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:35" (1/3) ... [2020-09-25 10:06:37,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5600b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:37, skipping insertion in model container [2020-09-25 10:06:37,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:36" (2/3) ... [2020-09-25 10:06:37,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5600b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:37, skipping insertion in model container [2020-09-25 10:06:37,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:37" (3/3) ... [2020-09-25 10:06:37,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 10:06:37,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:37,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:37,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:38,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:38,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:38,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:38,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:38,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:38,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:38,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:38,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 10:06:38,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:38,058 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] [2020-09-25 10:06:38,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 10:06:38,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:38,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081479926] [2020-09-25 10:06:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:06:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:06:43,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:43,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:06:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:06:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:43,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:43,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:06:43,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:43,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:43,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:43,714 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 10:06:43,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081479926] [2020-09-25 10:06:43,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:43,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:43,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722767785] [2020-09-25 10:06:43,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:43,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:43,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:43,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:43,755 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:46,080 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:46,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 10:06:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:46,108 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:46,108 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:46,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 10:06:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:46,252 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 131 [2020-09-25 10:06:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:46,253 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:46,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:06:46,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:46,269 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:06:46,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:46,270 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash 139765844, now seen corresponding path program 1 times [2020-09-25 10:06:46,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317192588] [2020-09-25 10:06:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:06:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:06:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:06:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:06:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:51,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:51,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:51,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:06:51,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:51,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:51,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:06:51,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317192588] [2020-09-25 10:06:51,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:51,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:51,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742828272] [2020-09-25 10:06:51,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:51,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:51,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:51,766 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 10:06:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:54,094 INFO L93 Difference]: Finished difference Result 1748 states and 2137 transitions. [2020-09-25 10:06:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:06:54,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 10:06:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:54,106 INFO L225 Difference]: With dead ends: 1748 [2020-09-25 10:06:54,106 INFO L226 Difference]: Without dead ends: 1108 [2020-09-25 10:06:54,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 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 10:06:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-09-25 10:06:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1020. [2020-09-25 10:06:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-09-25 10:06:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1228 transitions. [2020-09-25 10:06:54,159 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1228 transitions. Word has length 152 [2020-09-25 10:06:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:54,160 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1228 transitions. [2020-09-25 10:06:54,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:06:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1228 transitions. [2020-09-25 10:06:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 10:06:54,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:54,166 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:06:54,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:54,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:54,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1472828818, now seen corresponding path program 1 times [2020-09-25 10:06:54,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:54,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460062079] [2020-09-25 10:06:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 10:06:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 10:06:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:59,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:06:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 10:06:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:06:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:59,770 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-09-25 10:07:00,056 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-09-25 10:07:00,183 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-25 10:07:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:00,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:00,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:00,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:07:00,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:00,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:07:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:00,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:07:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:07:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:01,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460062079] [2020-09-25 10:07:01,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:01,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:07:01,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756509216] [2020-09-25 10:07:01,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:07:01,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:07:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:07:01,052 INFO L87 Difference]: Start difference. First operand 1020 states and 1228 transitions. Second operand 15 states. [2020-09-25 10:07:01,665 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-09-25 10:07:01,930 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-09-25 10:07:02,280 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-09-25 10:07:02,636 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-09-25 10:07:02,892 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-09-25 10:07:03,233 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-09-25 10:07:03,658 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-09-25 10:07:03,827 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 10:07:04,617 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2020-09-25 10:07:04,835 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-09-25 10:07:05,711 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-25 10:07:06,309 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-09-25 10:07:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:06,550 INFO L93 Difference]: Finished difference Result 2199 states and 2760 transitions. [2020-09-25 10:07:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:07:06,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 173 [2020-09-25 10:07:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:06,558 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 10:07:06,559 INFO L226 Difference]: Without dead ends: 1203 [2020-09-25 10:07:06,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:07:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-09-25 10:07:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1101. [2020-09-25 10:07:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-09-25 10:07:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1320 transitions. [2020-09-25 10:07:06,620 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1320 transitions. Word has length 173 [2020-09-25 10:07:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:06,621 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1320 transitions. [2020-09-25 10:07:06,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:07:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1320 transitions. [2020-09-25 10:07:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 10:07:06,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:06,628 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:07:06,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:06,629 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 10:07:06,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:06,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529783487] [2020-09-25 10:07:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 10:07:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:07:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:07:11,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:11,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:07:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:07:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:07:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 10:07:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:12,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:07:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:12,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529783487] [2020-09-25 10:07:12,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:12,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:07:12,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512683922] [2020-09-25 10:07:12,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:07:12,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:12,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:07:12,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:07:12,326 INFO L87 Difference]: Start difference. First operand 1101 states and 1320 transitions. Second operand 12 states. [2020-09-25 10:07:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:16,595 INFO L93 Difference]: Finished difference Result 2945 states and 3763 transitions. [2020-09-25 10:07:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:07:16,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2020-09-25 10:07:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:16,610 INFO L225 Difference]: With dead ends: 2945 [2020-09-25 10:07:16,610 INFO L226 Difference]: Without dead ends: 1770 [2020-09-25 10:07:16,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:07:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-09-25 10:07:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1678. [2020-09-25 10:07:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2020-09-25 10:07:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 1920 transitions. [2020-09-25 10:07:16,696 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 1920 transitions. Word has length 178 [2020-09-25 10:07:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:16,697 INFO L479 AbstractCegarLoop]: Abstraction has 1678 states and 1920 transitions. [2020-09-25 10:07:16,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:07:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 1920 transitions. [2020-09-25 10:07:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:07:16,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:16,706 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:07:16,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:07:16,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash 331697579, now seen corresponding path program 1 times [2020-09-25 10:07:16,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:16,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141021038] [2020-09-25 10:07:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 10:07:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 10:07:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:22,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:22,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:22,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:07:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:22,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:07:22,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141021038] [2020-09-25 10:07:22,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:22,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:07:22,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29714083] [2020-09-25 10:07:22,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:07:22,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:22,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:07:22,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:07:22,887 INFO L87 Difference]: Start difference. First operand 1678 states and 1920 transitions. Second operand 17 states. [2020-09-25 10:07:23,973 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-25 10:07:24,307 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99