/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/Problem06_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:41:56,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:41:56,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:41:56,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:41:56,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:41:56,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:41:56,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:41:56,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:41:56,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:41:56,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:41:56,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:41:56,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:41:56,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:41:56,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:41:56,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:41:56,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:41:56,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:41:56,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:41:56,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:41:56,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:41:56,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:41:56,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:41:56,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:41:56,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:41:56,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:41:56,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:41:56,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:41:56,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:41:56,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:41:56,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:41:56,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:41:56,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:41:56,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:41:56,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:41:56,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:41:56,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:41:56,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:41:56,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:41:56,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:41:56,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:41:56,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:41:56,223 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 01:41:56,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:41:56,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:41:56,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:41:56,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:41:56,247 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:41:56,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:41:56,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:41:56,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:41:56,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:41:56,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:41:56,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:41:56,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:41:56,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:41:56,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:41:56,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:41:56,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:41:56,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:41:56,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:41:56,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:41:56,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:41:56,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:41:56,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:41:56,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:41:56,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:41:56,252 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 01:41:56,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:41:56,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:41:56,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:41:56,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:41:56,548 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:41:56,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2020-10-14 01:41:56,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff32a7f3/82c1c4f76b7e46f3b64d0ed4017015f5/FLAG805fd75b1 [2020-10-14 01:41:57,768 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:41:57,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label52.c [2020-10-14 01:41:57,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff32a7f3/82c1c4f76b7e46f3b64d0ed4017015f5/FLAG805fd75b1 [2020-10-14 01:41:57,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ff32a7f3/82c1c4f76b7e46f3b64d0ed4017015f5 [2020-10-14 01:41:57,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:41:57,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:41:57,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:41:57,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:41:57,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:41:57,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:41:57" (1/1) ... [2020-10-14 01:41:57,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146a98d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57, skipping insertion in model container [2020-10-14 01:41:57,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:41:57" (1/1) ... [2020-10-14 01:41:58,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:41:58,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:42:00,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:42:00,494 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:42:01,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:42:01,755 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:42:01,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01 WrapperNode [2020-10-14 01:42:01,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:42:01,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:42:01,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:42:01,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:42:01,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:01,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:01,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:01,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:02,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:02,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:02,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (1/1) ... [2020-10-14 01:42:02,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:42:02,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:42:02,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:42:02,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:42:02,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (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 01:42:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:42:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:42:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:42:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:42:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:42:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:42:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:42:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:42:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:42:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:42:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:42:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:42:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:42:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:42:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:42:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:42:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:42:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:42:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:42:09,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:42:09,691 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:42:09,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:42:09 BoogieIcfgContainer [2020-10-14 01:42:09,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:42:09,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:42:09,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:42:09,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:42:09,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:41:57" (1/3) ... [2020-10-14 01:42:09,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29096ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:42:09, skipping insertion in model container [2020-10-14 01:42:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:42:01" (2/3) ... [2020-10-14 01:42:09,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29096ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:42:09, skipping insertion in model container [2020-10-14 01:42:09,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:42:09" (3/3) ... [2020-10-14 01:42:09,714 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label52.c [2020-10-14 01:42:09,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:42:09,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:42:09,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:42:09,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:42:09,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:42:09,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:42:09,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:42:09,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:42:09,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:42:09,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:42:09,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:42:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:42:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-14 01:42:09,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:09,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:09,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1969095729, now seen corresponding path program 1 times [2020-10-14 01:42:09,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:09,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877210169] [2020-10-14 01:42:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-14 01:42:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:42:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 01:42:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:15,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:15,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:42:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:42:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1008 [2020-10-14 01:42:15,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 01:42:16,949 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:42:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:42:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:16,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:16,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:42:16,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:42:16,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:16,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:42:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:42:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:17,969 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 01:42:17,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877210169] [2020-10-14 01:42:17,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:42:17,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:42:17,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960810823] [2020-10-14 01:42:17,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:42:17,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:42:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:42:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:42:17,991 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:42:18,188 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:32,002 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 01:42:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:42:32,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 998 [2020-10-14 01:42:32,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:32,056 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 01:42:32,057 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 01:42:32,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:42:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 01:42:32,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 01:42:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:42:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 01:42:32,226 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 998 [2020-10-14 01:42:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:32,229 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 01:42:32,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:42:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 01:42:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-14 01:42:32,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:32,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:32,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:42:32,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:32,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1501949746, now seen corresponding path program 1 times [2020-10-14 01:42:32,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:32,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463059983] [2020-10-14 01:42:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:38,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-14 01:42:38,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:42:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5347 [2020-10-14 01:42:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:42:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:42:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:42:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:38,812 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:42:38,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:42:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:42:38,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:42:38,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:38,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:42:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:42:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:42:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:42:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:42:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 01:42:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:38,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:42:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:42:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:42:39,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463059983] [2020-10-14 01:42:39,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:42:39,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:42:39,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334499346] [2020-10-14 01:42:39,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:42:39,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:42:39,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:42:39,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:42:39,587 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 7 states. [2020-10-14 01:42:39,761 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:40,803 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:42:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:56,924 INFO L93 Difference]: Finished difference Result 6952 states and 11749 transitions. [2020-10-14 01:42:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:42:56,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1010 [2020-10-14 01:42:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:56,952 INFO L225 Difference]: With dead ends: 6952 [2020-10-14 01:42:56,952 INFO L226 Difference]: Without dead ends: 4585 [2020-10-14 01:42:56,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:42:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2020-10-14 01:42:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4541. [2020-10-14 01:42:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-10-14 01:42:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6999 transitions. [2020-10-14 01:42:57,086 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6999 transitions. Word has length 1010 [2020-10-14 01:42:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:57,087 INFO L479 AbstractCegarLoop]: Abstraction has 4541 states and 6999 transitions. [2020-10-14 01:42:57,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:42:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6999 transitions. [2020-10-14 01:42:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-14 01:42:57,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:57,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:57,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:42:57,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -387364438, now seen corresponding path program 1 times [2020-10-14 01:42:57,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:57,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813597462] [2020-10-14 01:42:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:02,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:02,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-14 01:43:02,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:43:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 01:43:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:02,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:43:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:43:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:43:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:03,040 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:43:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:03,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:43:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:43:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:03,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:03,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:43:03,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 01:43:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:03,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:43:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:43:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:43:03,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813597462] [2020-10-14 01:43:03,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:43:03,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:43:03,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991382551] [2020-10-14 01:43:03,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:43:03,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:43:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:43:03,685 INFO L87 Difference]: Start difference. First operand 4541 states and 6999 transitions. Second operand 7 states. [2020-10-14 01:43:03,851 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:04,183 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:43:22,459 INFO L93 Difference]: Finished difference Result 13680 states and 21513 transitions. [2020-10-14 01:43:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:43:22,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1014 [2020-10-14 01:43:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:43:22,510 INFO L225 Difference]: With dead ends: 13680 [2020-10-14 01:43:22,510 INFO L226 Difference]: Without dead ends: 9145 [2020-10-14 01:43:22,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:43:22,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2020-10-14 01:43:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 8984. [2020-10-14 01:43:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8984 states. [2020-10-14 01:43:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8984 states to 8984 states and 12887 transitions. [2020-10-14 01:43:22,771 INFO L78 Accepts]: Start accepts. Automaton has 8984 states and 12887 transitions. Word has length 1014 [2020-10-14 01:43:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:43:22,772 INFO L479 AbstractCegarLoop]: Abstraction has 8984 states and 12887 transitions. [2020-10-14 01:43:22,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:43:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8984 states and 12887 transitions. [2020-10-14 01:43:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-14 01:43:22,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:43:22,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:22,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:43:22,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:43:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:43:22,841 INFO L82 PathProgramCache]: Analyzing trace with hash -695467107, now seen corresponding path program 1 times [2020-10-14 01:43:22,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:43:22,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205705114] [2020-10-14 01:43:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:43:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:28,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:28,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:43:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:43:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:28,394 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:28,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:43:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:43:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:43:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:43:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:43:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:43:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:43:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:28,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:43:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 01:43:28,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:28,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:43:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:43:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:43:29,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205705114] [2020-10-14 01:43:29,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:43:29,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:43:29,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502539753] [2020-10-14 01:43:29,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:43:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:43:29,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:43:29,346 INFO L87 Difference]: Start difference. First operand 8984 states and 12887 transitions. Second operand 7 states. [2020-10-14 01:43:29,572 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:30,015 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:43:56,915 INFO L93 Difference]: Finished difference Result 35837 states and 56138 transitions. [2020-10-14 01:43:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:43:56,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-14 01:43:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:43:57,050 INFO L225 Difference]: With dead ends: 35837 [2020-10-14 01:43:57,050 INFO L226 Difference]: Without dead ends: 26859 [2020-10-14 01:43:57,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:43:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2020-10-14 01:43:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 26734. [2020-10-14 01:43:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26734 states. [2020-10-14 01:43:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26734 states to 26734 states and 37795 transitions. [2020-10-14 01:43:57,783 INFO L78 Accepts]: Start accepts. Automaton has 26734 states and 37795 transitions. Word has length 1018 [2020-10-14 01:43:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:43:57,784 INFO L479 AbstractCegarLoop]: Abstraction has 26734 states and 37795 transitions. [2020-10-14 01:43:57,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:43:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 26734 states and 37795 transitions. [2020-10-14 01:43:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-14 01:43:57,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:43:57,946 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:57,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:43:57,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:43:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:43:57,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1834405739, now seen corresponding path program 1 times [2020-10-14 01:43:57,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:43:57,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031186741] [2020-10-14 01:43:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:43:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:03,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:03,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1042 [2020-10-14 01:44:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:44:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-14 01:44:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:03,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:44:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:44:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:03,449 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:03,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:03,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:03,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:03,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:44:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:03,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:03,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:03,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:44:03,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:44:03,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:03,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:44:03,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:44:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:44:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:44:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:44:04,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031186741] [2020-10-14 01:44:04,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:44:04,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:44:04,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291652257] [2020-10-14 01:44:04,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:44:04,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:04,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:44:04,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:44:04,161 INFO L87 Difference]: Start difference. First operand 26734 states and 37795 transitions. Second operand 7 states. [2020-10-14 01:44:04,388 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:04,724 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:44:21,221 INFO L93 Difference]: Finished difference Result 66797 states and 102052 transitions. [2020-10-14 01:44:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:44:21,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1022 [2020-10-14 01:44:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:44:21,409 INFO L225 Difference]: With dead ends: 66797 [2020-10-14 01:44:21,410 INFO L226 Difference]: Without dead ends: 40069 [2020-10-14 01:44:21,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:44:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40069 states. [2020-10-14 01:44:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40069 to 39857. [2020-10-14 01:44:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39857 states. [2020-10-14 01:44:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39857 states to 39857 states and 58795 transitions. [2020-10-14 01:44:22,799 INFO L78 Accepts]: Start accepts. Automaton has 39857 states and 58795 transitions. Word has length 1022 [2020-10-14 01:44:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:44:22,800 INFO L479 AbstractCegarLoop]: Abstraction has 39857 states and 58795 transitions. [2020-10-14 01:44:22,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:44:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 39857 states and 58795 transitions. [2020-10-14 01:44:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-14 01:44:22,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:44:22,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:22,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:44:22,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:44:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:44:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash -240675722, now seen corresponding path program 1 times [2020-10-14 01:44:22,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:44:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482182400] [2020-10-14 01:44:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:44:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 01:44:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:44:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:28,414 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:28,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:28,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:28,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:44:28,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:28,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:44:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:44:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:28,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:44:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:28,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:44:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 01:44:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 01:44:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:28,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:44:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 01:44:29,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482182400] [2020-10-14 01:44:29,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:44:29,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:44:29,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674238173] [2020-10-14 01:44:29,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:44:29,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:44:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:44:29,016 INFO L87 Difference]: Start difference. First operand 39857 states and 58795 transitions. Second operand 7 states. [2020-10-14 01:44:29,175 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:30,893 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:44:45,251 INFO L93 Difference]: Finished difference Result 93350 states and 147015 transitions. [2020-10-14 01:44:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:44:45,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1034 [2020-10-14 01:44:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:44:45,490 INFO L225 Difference]: With dead ends: 93350 [2020-10-14 01:44:45,490 INFO L226 Difference]: Without dead ends: 53499 [2020-10-14 01:44:45,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:44:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53499 states. [2020-10-14 01:44:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53499 to 53321. [2020-10-14 01:44:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53321 states. [2020-10-14 01:44:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53321 states to 53321 states and 80503 transitions. [2020-10-14 01:44:46,899 INFO L78 Accepts]: Start accepts. Automaton has 53321 states and 80503 transitions. Word has length 1034 [2020-10-14 01:44:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:44:46,900 INFO L479 AbstractCegarLoop]: Abstraction has 53321 states and 80503 transitions. [2020-10-14 01:44:46,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:44:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 53321 states and 80503 transitions. [2020-10-14 01:44:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-14 01:44:47,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:44:47,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:47,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:44:47,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:44:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:44:47,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1070834575, now seen corresponding path program 1 times [2020-10-14 01:44:47,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:44:47,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216980363] [2020-10-14 01:44:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:44:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:52,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 01:44:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:44:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:52,521 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:52,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:44:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:44:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:52,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:52,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 01:44:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:44:52,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:44:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:52,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 01:44:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:52,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:44:52,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:52,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:44:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:44:53,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216980363] [2020-10-14 01:44:53,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:44:53,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:44:53,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646096165] [2020-10-14 01:44:53,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:44:53,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:44:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:44:53,368 INFO L87 Difference]: Start difference. First operand 53321 states and 80503 transitions. Second operand 7 states. [2020-10-14 01:44:53,675 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:54,316 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:45:12,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:45:12,277 INFO L93 Difference]: Finished difference Result 124922 states and 209121 transitions. [2020-10-14 01:45:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:45:12,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1059 [2020-10-14 01:45:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:45:12,652 INFO L225 Difference]: With dead ends: 124922 [2020-10-14 01:45:12,653 INFO L226 Difference]: Without dead ends: 71607 [2020-10-14 01:45:12,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:45:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71607 states. [2020-10-14 01:45:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71607 to 71064. [2020-10-14 01:45:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71064 states. [2020-10-14 01:45:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71064 states to 71064 states and 114215 transitions. [2020-10-14 01:45:14,799 INFO L78 Accepts]: Start accepts. Automaton has 71064 states and 114215 transitions. Word has length 1059 [2020-10-14 01:45:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:45:14,800 INFO L479 AbstractCegarLoop]: Abstraction has 71064 states and 114215 transitions. [2020-10-14 01:45:14,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:45:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 71064 states and 114215 transitions. [2020-10-14 01:45:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2020-10-14 01:45:15,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:45:15,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:15,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:45:15,112 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:45:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:45:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash -335542546, now seen corresponding path program 1 times [2020-10-14 01:45:15,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:45:15,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813411973] [2020-10-14 01:45:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:45:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:22,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:22,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1097 [2020-10-14 01:45:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:45:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-14 01:45:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:22,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 01:45:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:45:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:23,177 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:45:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:45:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:23,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:45:23,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:23,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:45:23,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:23,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:45:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:45:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:45:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:45:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 01:45:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:23,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:23,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:45:23,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:23,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:45:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 01:45:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:45:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:45:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:45:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:45:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:45:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:45:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:45:23,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:45:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:45:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:45:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:45:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:45:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 01:45:23,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813411973] [2020-10-14 01:45:23,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:45:23,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:45:23,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015095499] [2020-10-14 01:45:23,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:45:23,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:45:23,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:45:23,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:45:23,908 INFO L87 Difference]: Start difference. First operand 71064 states and 114215 transitions. Second operand 7 states. [2020-10-14 01:45:24,579 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:45:24,803 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130