/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:40:30,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:40:30,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:40:30,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:40:30,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:40:30,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:40:30,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:40:30,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:40:30,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:40:30,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:40:30,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:40:30,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:40:30,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:40:30,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:40:30,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:40:30,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:40:30,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:40:30,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:40:30,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:40:30,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:40:30,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:40:30,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:40:30,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:40:30,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:40:30,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:40:30,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:40:30,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:40:30,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:40:30,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:40:30,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:40:30,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:40:30,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:40:30,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:40:30,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:40:30,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:40:30,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:40:30,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:40:30,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:40:30,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:40:30,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:40:30,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:40:30,851 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 [2020-10-14 04:40:30,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:40:30,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:40:30,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:40:30,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:40:30,875 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:40:30,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:40:30,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:40:30,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:40:30,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:40:30,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:40:30,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:40:30,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:40:30,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:40:30,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:40:30,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:40:30,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:40:30,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:40:30,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:40:30,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:40:30,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:40:30,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:40:30,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:40:30,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:40:30,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:40:30,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:40:30,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:40:30,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:40:30,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:40:30,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:40:30,880 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:40:31,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:40:31,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:40:31,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:40:31,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:40:31,223 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:40:31,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-14 04:40:31,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30f8fa3be/54aee9bb9a7542d2ae9715d8e7736c89/FLAG6656bd3fe [2020-10-14 04:40:32,309 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:40:32,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2020-10-14 04:40:32,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30f8fa3be/54aee9bb9a7542d2ae9715d8e7736c89/FLAG6656bd3fe [2020-10-14 04:40:32,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30f8fa3be/54aee9bb9a7542d2ae9715d8e7736c89 [2020-10-14 04:40:32,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:40:32,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:40:32,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:40:32,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:40:32,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:40:32,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:32" (1/1) ... [2020-10-14 04:40:32,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:32, skipping insertion in model container [2020-10-14 04:40:32,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:32" (1/1) ... [2020-10-14 04:40:32,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:40:32,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:40:35,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:40:35,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:40:36,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:40:36,565 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:40:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36 WrapperNode [2020-10-14 04:40:36,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:40:36,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:40:36,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:40:36,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:40:36,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:36,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (1/1) ... [2020-10-14 04:40:37,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:40:37,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:40:37,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:40:37,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:40:37,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (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 [2020-10-14 04:40:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:40:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:40:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:40:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:40:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:40:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:40:37,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:40:37,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:40:37,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:40:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:40:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:40:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:40:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:40:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:40:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:40:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:40:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:40:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:40:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:40:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:40:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:40:48,826 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:40:48,826 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:40:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:48 BoogieIcfgContainer [2020-10-14 04:40:48,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:40:48,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:40:48,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:40:48,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:40:48,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:40:32" (1/3) ... [2020-10-14 04:40:48,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55445f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:48, skipping insertion in model container [2020-10-14 04:40:48,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:36" (2/3) ... [2020-10-14 04:40:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55445f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:48, skipping insertion in model container [2020-10-14 04:40:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:48" (3/3) ... [2020-10-14 04:40:48,849 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label54.c [2020-10-14 04:40:48,859 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:40:48,873 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:40:48,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:40:48,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:40:48,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:40:48,923 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:40:48,923 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:40:48,923 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:40:48,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:40:48,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:40:48,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:40:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:40:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:40:48,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:40:48,987 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] [2020-10-14 04:40:48,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:40:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:40:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash 862648450, now seen corresponding path program 1 times [2020-10-14 04:40:49,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:40:49,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087257769] [2020-10-14 04:40:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:40:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:49,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 04:40:49,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 04:40:49,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:49,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:40:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:40:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:40:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:40:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:40:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:40:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:40:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:40:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:40:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:40:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:40:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:40:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:40:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:40:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:40:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:40:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:40:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:40:49,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087257769] [2020-10-14 04:40:49,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:40:49,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:40:49,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981959681] [2020-10-14 04:40:49,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:40:49,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:40:49,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:40:49,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:40:49,966 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:41:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:14,408 INFO L93 Difference]: Finished difference Result 5086 states and 9561 transitions. [2020-10-14 04:41:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:14,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-14 04:41:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:14,464 INFO L225 Difference]: With dead ends: 5086 [2020-10-14 04:41:14,464 INFO L226 Difference]: Without dead ends: 3245 [2020-10-14 04:41:14,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:41:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-14 04:41:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3178. [2020-10-14 04:41:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-14 04:41:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5849 transitions. [2020-10-14 04:41:14,686 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5849 transitions. Word has length 70 [2020-10-14 04:41:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:14,689 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 5849 transitions. [2020-10-14 04:41:14,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5849 transitions. [2020-10-14 04:41:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 04:41:14,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:14,702 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, 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] [2020-10-14 04:41:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:41:14,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash -961239985, now seen corresponding path program 1 times [2020-10-14 04:41:14,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:14,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276405468] [2020-10-14 04:41:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:16,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:41:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:41:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-14 04:41:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:16,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:41:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:16,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:16,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:16,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:16,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:16,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:41:16,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:16,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:16,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:41:16,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:41:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 04:41:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:16,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276405468] [2020-10-14 04:41:16,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:16,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:41:16,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171012043] [2020-10-14 04:41:16,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:16,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:16,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:16,311 INFO L87 Difference]: Start difference. First operand 3178 states and 5849 transitions. Second operand 5 states. [2020-10-14 04:41:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:41:40,294 INFO L93 Difference]: Finished difference Result 7873 states and 14546 transitions. [2020-10-14 04:41:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:41:40,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 04:41:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:41:40,325 INFO L225 Difference]: With dead ends: 7873 [2020-10-14 04:41:40,325 INFO L226 Difference]: Without dead ends: 4701 [2020-10-14 04:41:40,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:41:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2020-10-14 04:41:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4636. [2020-10-14 04:41:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4636 states. [2020-10-14 04:41:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 7585 transitions. [2020-10-14 04:41:40,469 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 7585 transitions. Word has length 141 [2020-10-14 04:41:40,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:41:40,470 INFO L479 AbstractCegarLoop]: Abstraction has 4636 states and 7585 transitions. [2020-10-14 04:41:40,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:41:40,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 7585 transitions. [2020-10-14 04:41:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:41:40,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:40,473 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, 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] [2020-10-14 04:41:40,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:41:40,473 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash 591364229, now seen corresponding path program 1 times [2020-10-14 04:41:40,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:40,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037685251] [2020-10-14 04:41:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:41,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:41:41,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:41:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-14 04:41:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:41,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:41:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:41:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:41:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:41:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:41:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:41:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:41:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:41,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:41:41,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:41:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:41,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:41:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:41:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:41:41,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037685251] [2020-10-14 04:41:41,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:41:41,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:41:41,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325152014] [2020-10-14 04:41:41,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:41:41,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:41,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:41:41,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:41:41,739 INFO L87 Difference]: Start difference. First operand 4636 states and 7585 transitions. Second operand 5 states. [2020-10-14 04:42:23,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:23,116 INFO L93 Difference]: Finished difference Result 13603 states and 22537 transitions. [2020-10-14 04:42:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:23,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 04:42:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:23,168 INFO L225 Difference]: With dead ends: 13603 [2020-10-14 04:42:23,168 INFO L226 Difference]: Without dead ends: 8973 [2020-10-14 04:42:23,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:42:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2020-10-14 04:42:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 8947. [2020-10-14 04:42:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8947 states. [2020-10-14 04:42:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8947 states to 8947 states and 14330 transitions. [2020-10-14 04:42:23,509 INFO L78 Accepts]: Start accepts. Automaton has 8947 states and 14330 transitions. Word has length 146 [2020-10-14 04:42:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:23,509 INFO L479 AbstractCegarLoop]: Abstraction has 8947 states and 14330 transitions. [2020-10-14 04:42:23,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:42:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8947 states and 14330 transitions. [2020-10-14 04:42:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 04:42:23,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:23,517 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, 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] [2020-10-14 04:42:23,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:42:23,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash 888953651, now seen corresponding path program 1 times [2020-10-14 04:42:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:23,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453544791] [2020-10-14 04:42:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:25,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:25,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:42:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:42:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-14 04:42:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:25,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 04:42:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:42:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:25,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:42:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:25,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:26,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:26,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:42:26,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:26,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:42:26,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:26,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:26,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 04:42:26,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:26,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453544791] [2020-10-14 04:42:26,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:26,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:26,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357529046] [2020-10-14 04:42:26,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:26,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:26,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:26,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:26,146 INFO L87 Difference]: Start difference. First operand 8947 states and 14330 transitions. Second operand 5 states. [2020-10-14 04:43:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:07,359 INFO L93 Difference]: Finished difference Result 26341 states and 43029 transitions. [2020-10-14 04:43:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:07,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-14 04:43:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:07,433 INFO L225 Difference]: With dead ends: 26341 [2020-10-14 04:43:07,433 INFO L226 Difference]: Without dead ends: 17400 [2020-10-14 04:43:07,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17400 states. [2020-10-14 04:43:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17400 to 17390. [2020-10-14 04:43:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17390 states. [2020-10-14 04:43:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17390 states to 17390 states and 25419 transitions. [2020-10-14 04:43:07,948 INFO L78 Accepts]: Start accepts. Automaton has 17390 states and 25419 transitions. Word has length 156 [2020-10-14 04:43:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:07,950 INFO L479 AbstractCegarLoop]: Abstraction has 17390 states and 25419 transitions. [2020-10-14 04:43:07,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 17390 states and 25419 transitions. [2020-10-14 04:43:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 04:43:07,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:07,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:43:07,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:43:07,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2098556698, now seen corresponding path program 1 times [2020-10-14 04:43:07,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:07,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189807580] [2020-10-14 04:43:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 04:43:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:43:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:43:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:12,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 04:43:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:43:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:43:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:43:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:13,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:43:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:13,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:43:13,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:43:13,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:13,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:13,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:43:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:43:13,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:43:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:13,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 04:43:13,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:43:13,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 04:43:13,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189807580] [2020-10-14 04:43:13,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:43:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:43:13,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071993490] [2020-10-14 04:43:13,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:13,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:13,417 INFO L87 Difference]: Start difference. First operand 17390 states and 25419 transitions. Second operand 5 states. [2020-10-14 04:44:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:44:04,073 INFO L93 Difference]: Finished difference Result 34849 states and 51224 transitions. [2020-10-14 04:44:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:44:04,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-14 04:44:04,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:44:04,156 INFO L225 Difference]: With dead ends: 34849 [2020-10-14 04:44:04,156 INFO L226 Difference]: Without dead ends: 17465 [2020-10-14 04:44:04,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:44:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17465 states. [2020-10-14 04:44:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17465 to 17392. [2020-10-14 04:44:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17392 states. [2020-10-14 04:44:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17392 states to 17392 states and 24910 transitions. [2020-10-14 04:44:04,606 INFO L78 Accepts]: Start accepts. Automaton has 17392 states and 24910 transitions. Word has length 227 [2020-10-14 04:44:04,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:44:04,607 INFO L479 AbstractCegarLoop]: Abstraction has 17392 states and 24910 transitions. [2020-10-14 04:44:04,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:44:04,607 INFO L276 IsEmpty]: Start isEmpty. Operand 17392 states and 24910 transitions. [2020-10-14 04:44:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 04:44:04,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:44:04,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:44:04,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:44:04,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:44:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:44:04,617 INFO L82 PathProgramCache]: Analyzing trace with hash 343329513, now seen corresponding path program 1 times [2020-10-14 04:44:04,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:44:04,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594674815] [2020-10-14 04:44:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:44:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:08,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:08,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 04:44:08,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:44:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3910 [2020-10-14 04:44:08,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:08,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:08,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:44:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-14 04:44:08,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:44:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:44:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:08,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:08,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:44:08,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:44:08,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:08,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:44:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:08,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:08,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 04:44:08,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:08,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:44:08,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:08,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:08,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 04:44:08,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 04:44:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:09,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:09,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:44:09,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:44:09,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 04:44:09,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:09,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:44:09,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:44:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:44:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:44:09,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594674815] [2020-10-14 04:44:09,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:44:09,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:44:09,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352641559] [2020-10-14 04:44:09,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:44:09,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:44:09,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:44:09,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:44:09,303 INFO L87 Difference]: Start difference. First operand 17392 states and 24910 transitions. Second operand 7 states.