/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem05_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:40:55,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:40:55,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:40:55,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:40:55,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:40:55,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:40:55,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:40:55,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:40:56,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:40:56,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:40:56,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:40:56,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:40:56,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:40:56,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:40:56,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:40:56,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:40:56,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:40:56,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:40:56,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:40:56,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:40:56,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:40:56,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:40:56,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:40:56,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:40:56,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:40:56,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:40:56,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:40:56,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:40:56,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:40:56,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:40:56,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:40:56,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:40:56,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:40:56,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:40:56,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:40:56,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:40:56,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:40:56,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:40:56,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:40:56,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:40:56,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:40:56,055 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 19:40:56,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:40:56,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:40:56,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:40:56,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:40:56,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:40:56,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:40:56,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:40:56,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:40:56,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:40:56,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:40:56,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:40:56,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:40:56,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:40:56,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:40:56,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:40:56,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:40:56,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:40:56,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:40:56,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:40:56,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:40:56,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:40:56,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:40:56,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:40:56,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:40:56,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:40:56,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:40:56,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:40:56,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:40:56,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:40:56,109 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:40:56,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:40:56,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:40:56,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:40:56,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:40:56,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:40:56,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label25.c [2020-10-14 19:40:56,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdaf6228/e8a0457359d644d6a7a56a624db021cd/FLAG1d5126f4c [2020-10-14 19:40:57,447 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:40:57,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label25.c [2020-10-14 19:40:57,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdaf6228/e8a0457359d644d6a7a56a624db021cd/FLAG1d5126f4c [2020-10-14 19:40:57,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bdaf6228/e8a0457359d644d6a7a56a624db021cd [2020-10-14 19:40:57,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:40:57,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:40:57,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:40:57,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:40:57,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:40:57,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:40:57" (1/1) ... [2020-10-14 19:40:57,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:57, skipping insertion in model container [2020-10-14 19:40:57,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:40:57" (1/1) ... [2020-10-14 19:40:57,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:40:58,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:41:00,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:41:00,637 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:41:02,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:41:02,182 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:41:02,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02 WrapperNode [2020-10-14 19:41:02,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:41:02,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:41:02,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:41:02,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:41:02,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (1/1) ... [2020-10-14 19:41:02,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:41:02,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:41:02,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:41:02,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:41:02,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (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 19:41:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:41:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:41:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:41:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:41:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:41:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:41:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:41:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:41:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:41:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:41:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:41:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:41:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:41:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:41:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:41:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:41:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:41:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:41:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:41:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:41:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:41:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:41:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:41:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:41:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:41:11,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:41:11,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:41:11,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:11 BoogieIcfgContainer [2020-10-14 19:41:11,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:41:11,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:41:11,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:41:11,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:41:11,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:40:57" (1/3) ... [2020-10-14 19:41:11,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34336186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:11, skipping insertion in model container [2020-10-14 19:41:11,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:02" (2/3) ... [2020-10-14 19:41:11,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34336186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:11, skipping insertion in model container [2020-10-14 19:41:11,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:11" (3/3) ... [2020-10-14 19:41:11,145 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label25.c [2020-10-14 19:41:11,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:41:11,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:41:11,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:41:11,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:41:11,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:41:11,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:41:11,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:41:11,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:41:11,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:41:11,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:41:11,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:41:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:41:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1684 [2020-10-14 19:41:11,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:41:11,365 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:11,366 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:41:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:41:11,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1560840096, now seen corresponding path program 1 times [2020-10-14 19:41:11,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:41:11,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352770887] [2020-10-14 19:41:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:41:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:17,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:17,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1705 [2020-10-14 19:41:17,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:41:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-14 19:41:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:17,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:41:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:41:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1699 [2020-10-14 19:41:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:41:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:41:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:19,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:19,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:41:19,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:41:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:41:19,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:19,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:41:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:41:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:41:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:41:22,980 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 19:41:22,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352770887] [2020-10-14 19:41:22,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:41:22,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:41:22,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696055181] [2020-10-14 19:41:22,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:41:22,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:41:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:41:23,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:41:23,007 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-14 19:41:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:41:48,865 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2020-10-14 19:41:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:41:48,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1683 [2020-10-14 19:41:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:41:48,936 INFO L225 Difference]: With dead ends: 8125 [2020-10-14 19:41:48,936 INFO L226 Difference]: Without dead ends: 5835 [2020-10-14 19:41:48,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:41:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-14 19:41:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2020-10-14 19:41:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5801 states. [2020-10-14 19:41:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2020-10-14 19:41:49,282 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1683 [2020-10-14 19:41:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:41:49,286 INFO L479 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2020-10-14 19:41:49,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:41:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2020-10-14 19:41:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2020-10-14 19:41:49,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:41:49,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:49,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:41:49,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:41:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:41:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash -748405421, now seen corresponding path program 1 times [2020-10-14 19:41:49,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:41:49,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531539415] [2020-10-14 19:41:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:41:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1733 [2020-10-14 19:41:54,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:41:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5210 [2020-10-14 19:41:54,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:54,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 19:41:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:41:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-14 19:41:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:01,935 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-14 19:42:02,119 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-14 19:42:02,386 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-10-14 19:42:02,558 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-10-14 19:42:03,033 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 34 [2020-10-14 19:42:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:42:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:03,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:03,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:42:03,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:03,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:42:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:03,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:42:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:42:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:42:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:03,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:42:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:42:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:03,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:42:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:42:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:03,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:42:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:42:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:42:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:03,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:42:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:42:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:42:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:42:22,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531539415] [2020-10-14 19:42:22,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:42:22,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 19:42:22,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385442465] [2020-10-14 19:42:22,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 19:42:22,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:42:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 19:42:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-14 19:42:22,398 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand 23 states. [2020-10-14 19:42:23,217 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-14 19:42:24,478 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-14 19:42:32,071 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 19:42:44,853 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 19:42:58,898 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-14 19:43:01,138 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-14 19:43:03,358 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-14 19:43:09,923 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-14 19:43:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:43:24,137 INFO L93 Difference]: Finished difference Result 12907 states and 21400 transitions. [2020-10-14 19:43:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 19:43:24,139 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1707 [2020-10-14 19:43:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:43:24,174 INFO L225 Difference]: With dead ends: 12907 [2020-10-14 19:43:24,175 INFO L226 Difference]: Without dead ends: 7112 [2020-10-14 19:43:24,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 19:43:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2020-10-14 19:43:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7105. [2020-10-14 19:43:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2020-10-14 19:43:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10722 transitions. [2020-10-14 19:43:24,372 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10722 transitions. Word has length 1707 [2020-10-14 19:43:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:43:24,375 INFO L479 AbstractCegarLoop]: Abstraction has 7105 states and 10722 transitions. [2020-10-14 19:43:24,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 19:43:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10722 transitions. [2020-10-14 19:43:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2020-10-14 19:43:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:43:24,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:24,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:43:24,503 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:43:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:43:24,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2068127899, now seen corresponding path program 1 times [2020-10-14 19:43:24,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:43:24,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412961550] [2020-10-14 19:43:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:43:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:29,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1736 [2020-10-14 19:43:29,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:43:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-14 19:43:29,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:29,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 19:43:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:43:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 798 [2020-10-14 19:43:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:32,275 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-14 19:43:32,405 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-14 19:43:32,614 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2020-10-14 19:43:32,767 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-10-14 19:43:33,615 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-14 19:43:33,794 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-14 19:43:33,966 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 37 [2020-10-14 19:43:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:43:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:43:34,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:43:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:43:34,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:43:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:43:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:43:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:34,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:43:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:43:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:43:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:43:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:43:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:43:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:43:34,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:43:34,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:43:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 19:43:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:43:34,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:43:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:43:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:43:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:43:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:43:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:43:46,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412961550] [2020-10-14 19:43:46,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:43:46,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 19:43:46,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190579044] [2020-10-14 19:43:46,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 19:43:46,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:43:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 19:43:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-14 19:43:46,558 INFO L87 Difference]: Start difference. First operand 7105 states and 10722 transitions. Second operand 22 states.