/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/Problem12_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:13:39,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:13:39,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:13:39,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:13:39,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:13:39,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:13:39,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:13:39,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:13:39,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:13:39,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:13:39,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:13:39,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:13:39,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:13:39,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:13:39,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:13:39,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:13:39,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:13:39,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:13:39,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:13:39,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:13:39,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:13:39,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:13:39,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:13:39,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:13:39,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:13:39,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:13:39,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:13:39,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:13:39,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:13:39,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:13:39,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:13:39,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:13:39,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:13:39,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:13:39,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:13:39,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:13:39,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:13:39,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:13:39,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:13:39,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:13:39,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:13:39,195 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 21:13:39,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:13:39,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:13:39,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:13:39,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:13:39,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:13:39,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:13:39,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:13:39,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:13:39,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:13:39,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:13:39,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:13:39,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:13:39,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:13:39,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:13:39,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:13:39,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:13:39,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:13:39,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:13:39,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:13:39,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:13:39,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:13:39,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:13:39,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:13:39,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:13:39,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:13:39,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:13:39,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:13:39,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:13:39,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:13:39,229 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 21:13:39,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:13:39,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:13:39,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:13:39,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:13:39,661 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:13:39,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-14 21:13:39,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928500f07/71d8580e36a34ae5b21f0cb82d236da5/FLAG8ff89ea46 [2020-10-14 21:13:40,576 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:13:40,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-14 21:13:40,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928500f07/71d8580e36a34ae5b21f0cb82d236da5/FLAG8ff89ea46 [2020-10-14 21:13:41,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/928500f07/71d8580e36a34ae5b21f0cb82d236da5 [2020-10-14 21:13:41,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:13:41,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:13:41,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:41,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:13:41,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:13:41,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:41" (1/1) ... [2020-10-14 21:13:41,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:41, skipping insertion in model container [2020-10-14 21:13:41,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:41" (1/1) ... [2020-10-14 21:13:41,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:13:41,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:13:43,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:43,069 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:13:43,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:13:43,903 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:13:43,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43 WrapperNode [2020-10-14 21:13:43,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:13:43,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:13:43,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:13:43,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:13:43,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:43,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:43,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:43,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:44,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:44,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:44,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (1/1) ... [2020-10-14 21:13:44,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:13:44,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:13:44,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:13:44,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:13:44,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (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 21:13:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:13:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:13:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:13:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:13:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:13:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:13:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:13:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:13:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:13:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:13:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:13:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:13:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:13:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:13:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:13:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:13:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:13:49,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:13:49,634 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:13:49,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49 BoogieIcfgContainer [2020-10-14 21:13:49,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:13:49,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:13:49,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:13:49,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:13:49,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:41" (1/3) ... [2020-10-14 21:13:49,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f877fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2020-10-14 21:13:49,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:43" (2/3) ... [2020-10-14 21:13:49,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f877fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2020-10-14 21:13:49,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49" (3/3) ... [2020-10-14 21:13:49,673 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2020-10-14 21:13:49,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:13:49,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:13:49,721 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:13:49,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:13:49,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:13:49,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:13:49,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:13:49,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:13:49,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:13:49,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:13:49,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:13:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:13:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 21:13:49,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:49,816 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] [2020-10-14 21:13:49,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1416358702, now seen corresponding path program 1 times [2020-10-14 21:13:49,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:49,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864678116] [2020-10-14 21:13:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 21:13:50,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-14 21:13:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:50,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:13:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:13:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 21:13:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:13:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:13:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:13:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:13:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:13:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:13:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:13:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:13:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:13:50,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:13:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:13:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:13:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:13:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:13:50,692 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 21:13:50,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864678116] [2020-10-14 21:13:50,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:13:50,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:13:50,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886767813] [2020-10-14 21:13:50,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:13:50,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:13:50,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:13:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:13:50,729 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:13:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:13:59,657 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 21:13:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:13:59,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 21:13:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:13:59,695 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:13:59,696 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:13:59,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:13:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:13:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 21:13:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 21:13:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 21:13:59,888 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 31 [2020-10-14 21:13:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:13:59,889 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 21:13:59,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:13:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 21:13:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 21:13:59,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:13:59,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:59,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:13:59,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:13:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:13:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash 270331659, now seen corresponding path program 1 times [2020-10-14 21:13:59,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:13:59,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642218301] [2020-10-14 21:13:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:13:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:14:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-14 21:14:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:14:00,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:14:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:14:00,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:00,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:01,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:01,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:01,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:14:01,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:01,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:14:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:14:01,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642218301] [2020-10-14 21:14:01,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:01,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:14:01,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090466207] [2020-10-14 21:14:01,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:14:01,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:14:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:01,124 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-14 21:14:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:11,636 INFO L93 Difference]: Finished difference Result 4689 states and 7282 transitions. [2020-10-14 21:14:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:14:11,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-14 21:14:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:11,666 INFO L225 Difference]: With dead ends: 4689 [2020-10-14 21:14:11,666 INFO L226 Difference]: Without dead ends: 3140 [2020-10-14 21:14:11,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-10-14 21:14:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2020-10-14 21:14:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-14 21:14:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4276 transitions. [2020-10-14 21:14:11,772 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4276 transitions. Word has length 106 [2020-10-14 21:14:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:11,773 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4276 transitions. [2020-10-14 21:14:11,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:14:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4276 transitions. [2020-10-14 21:14:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 21:14:11,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:11,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:11,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:11,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:11,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1580646199, now seen corresponding path program 1 times [2020-10-14 21:14:11,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:11,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347925472] [2020-10-14 21:14:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:14:12,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:12,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 21:14:12,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:14:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:14:12,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:12,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:13,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:13,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:14:13,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 21:14:13,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:13,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:14:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:13,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347925472] [2020-10-14 21:14:13,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:13,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:13,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871840739] [2020-10-14 21:14:13,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:13,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:13,218 INFO L87 Difference]: Start difference. First operand 3127 states and 4276 transitions. Second operand 7 states. [2020-10-14 21:14:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:25,079 INFO L93 Difference]: Finished difference Result 9536 states and 13149 transitions. [2020-10-14 21:14:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:25,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-14 21:14:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:25,112 INFO L225 Difference]: With dead ends: 9536 [2020-10-14 21:14:25,113 INFO L226 Difference]: Without dead ends: 6415 [2020-10-14 21:14:25,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:14:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6415 states. [2020-10-14 21:14:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6415 to 6356. [2020-10-14 21:14:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2020-10-14 21:14:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 8111 transitions. [2020-10-14 21:14:25,327 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 8111 transitions. Word has length 112 [2020-10-14 21:14:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:25,330 INFO L479 AbstractCegarLoop]: Abstraction has 6356 states and 8111 transitions. [2020-10-14 21:14:25,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 8111 transitions. [2020-10-14 21:14:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 21:14:25,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:25,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:25,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:14:25,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:25,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1611905034, now seen corresponding path program 1 times [2020-10-14 21:14:25,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:25,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461267535] [2020-10-14 21:14:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 21:14:27,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-10-14 21:14:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:14:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:27,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:14:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:27,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:14:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 21:14:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:14:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:27,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461267535] [2020-10-14 21:14:27,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:27,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:14:27,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880512500] [2020-10-14 21:14:27,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:14:27,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:27,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:14:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:27,894 INFO L87 Difference]: Start difference. First operand 6356 states and 8111 transitions. Second operand 8 states. [2020-10-14 21:14:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:49,104 INFO L93 Difference]: Finished difference Result 15350 states and 21203 transitions. [2020-10-14 21:14:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:14:49,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-10-14 21:14:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:49,146 INFO L225 Difference]: With dead ends: 15350 [2020-10-14 21:14:49,146 INFO L226 Difference]: Without dead ends: 9767 [2020-10-14 21:14:49,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:14:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2020-10-14 21:14:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 8090. [2020-10-14 21:14:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8090 states. [2020-10-14 21:14:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 9907 transitions. [2020-10-14 21:14:49,431 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 9907 transitions. Word has length 179 [2020-10-14 21:14:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:49,432 INFO L479 AbstractCegarLoop]: Abstraction has 8090 states and 9907 transitions. [2020-10-14 21:14:49,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:14:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 9907 transitions. [2020-10-14 21:14:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 21:14:49,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:49,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:49,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:14:49,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash 143191814, now seen corresponding path program 1 times [2020-10-14 21:14:49,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:49,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937944105] [2020-10-14 21:14:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:50,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:50,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 21:14:50,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:50,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-14 21:14:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:50,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:14:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 21:14:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:14:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:51,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:14:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:14:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:14:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:14:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 21:14:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:51,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:51,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:14:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:14:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:14:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:14:51,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:51,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:14:51,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937944105] [2020-10-14 21:14:51,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:51,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:14:51,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223505257] [2020-10-14 21:14:51,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:14:51,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:51,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:14:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:51,604 INFO L87 Difference]: Start difference. First operand 8090 states and 9907 transitions. Second operand 6 states. [2020-10-14 21:15:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:11,085 INFO L93 Difference]: Finished difference Result 21868 states and 29049 transitions. [2020-10-14 21:15:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:15:11,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2020-10-14 21:15:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:11,146 INFO L225 Difference]: With dead ends: 21868 [2020-10-14 21:15:11,146 INFO L226 Difference]: Without dead ends: 14551 [2020-10-14 21:15:11,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14551 states. [2020-10-14 21:15:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14551 to 14477. [2020-10-14 21:15:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14477 states. [2020-10-14 21:15:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14477 states to 14477 states and 18122 transitions. [2020-10-14 21:15:11,533 INFO L78 Accepts]: Start accepts. Automaton has 14477 states and 18122 transitions. Word has length 251 [2020-10-14 21:15:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:11,534 INFO L479 AbstractCegarLoop]: Abstraction has 14477 states and 18122 transitions. [2020-10-14 21:15:11,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:15:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 14477 states and 18122 transitions. [2020-10-14 21:15:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 21:15:11,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:11,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:15:11,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:15:11,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -241557574, now seen corresponding path program 1 times [2020-10-14 21:15:11,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:11,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235985735] [2020-10-14 21:15:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 21:15:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-10-14 21:15:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:13,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:15:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:15:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:13,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:13,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:13,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:15:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:13,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:13,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:13,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:15:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:13,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:15:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:13,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:13,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:13,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:15:13,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:15:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:15:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:15:13,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235985735] [2020-10-14 21:15:13,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:13,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:15:13,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610606569] [2020-10-14 21:15:13,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:15:13,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:13,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:15:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:15:13,954 INFO L87 Difference]: Start difference. First operand 14477 states and 18122 transitions. Second operand 5 states. [2020-10-14 21:15:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:27,866 INFO L93 Difference]: Finished difference Result 42469 states and 54961 transitions. [2020-10-14 21:15:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:15:27,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 21:15:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:27,963 INFO L225 Difference]: With dead ends: 42469 [2020-10-14 21:15:27,963 INFO L226 Difference]: Without dead ends: 26403 [2020-10-14 21:15:28,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26403 states. [2020-10-14 21:15:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26403 to 25613. [2020-10-14 21:15:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25613 states. [2020-10-14 21:15:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25613 states to 25613 states and 32417 transitions. [2020-10-14 21:15:28,805 INFO L78 Accepts]: Start accepts. Automaton has 25613 states and 32417 transitions. Word has length 269 [2020-10-14 21:15:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:28,806 INFO L479 AbstractCegarLoop]: Abstraction has 25613 states and 32417 transitions. [2020-10-14 21:15:28,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:15:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25613 states and 32417 transitions. [2020-10-14 21:15:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 21:15:28,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:28,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:15:28,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:28,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1316259919, now seen corresponding path program 1 times [2020-10-14 21:15:28,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:28,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22167966] [2020-10-14 21:15:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:29,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:29,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 21:15:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-14 21:15:29,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:29,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:15:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:15:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:30,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:30,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:30,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:30,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:15:30,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:30,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:15:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:30,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:15:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:15:30,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:30,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:15:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:15:31,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22167966] [2020-10-14 21:15:31,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:31,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:31,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387430399] [2020-10-14 21:15:31,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:31,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:31,583 INFO L87 Difference]: Start difference. First operand 25613 states and 32417 transitions. Second operand 7 states. [2020-10-14 21:15:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:49,265 INFO L93 Difference]: Finished difference Result 58486 states and 78406 transitions. [2020-10-14 21:15:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:49,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 21:15:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:49,379 INFO L225 Difference]: With dead ends: 58486 [2020-10-14 21:15:49,380 INFO L226 Difference]: Without dead ends: 32879 [2020-10-14 21:15:49,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32879 states. [2020-10-14 21:15:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32879 to 31845. [2020-10-14 21:15:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31845 states. [2020-10-14 21:15:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31845 states to 31845 states and 41065 transitions. [2020-10-14 21:15:50,402 INFO L78 Accepts]: Start accepts. Automaton has 31845 states and 41065 transitions. Word has length 270 [2020-10-14 21:15:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:50,402 INFO L479 AbstractCegarLoop]: Abstraction has 31845 states and 41065 transitions. [2020-10-14 21:15:50,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 31845 states and 41065 transitions. [2020-10-14 21:15:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 21:15:50,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:50,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:50,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:15:50,410 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:50,411 INFO L82 PathProgramCache]: Analyzing trace with hash -804705798, now seen corresponding path program 1 times [2020-10-14 21:15:50,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:50,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176594944] [2020-10-14 21:15:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 21:15:51,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-14 21:15:51,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 21:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 21:15:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:51,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:15:51,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 21:15:51,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:51,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:15:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:15:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:15:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:51,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:15:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 21:15:51,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176594944] [2020-10-14 21:15:51,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:51,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:15:51,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891277140] [2020-10-14 21:15:51,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:51,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:51,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:51,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:51,583 INFO L87 Difference]: Start difference. First operand 31845 states and 41065 transitions. Second operand 6 states. [2020-10-14 21:16:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:12,110 INFO L93 Difference]: Finished difference Result 118254 states and 160333 transitions. [2020-10-14 21:16:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:16:12,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 301 [2020-10-14 21:16:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:12,435 INFO L225 Difference]: With dead ends: 118254 [2020-10-14 21:16:12,436 INFO L226 Difference]: Without dead ends: 84866 [2020-10-14 21:16:12,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84866 states. [2020-10-14 21:16:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84866 to 75569. [2020-10-14 21:16:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75569 states. [2020-10-14 21:16:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75569 states to 75569 states and 98000 transitions. [2020-10-14 21:16:15,808 INFO L78 Accepts]: Start accepts. Automaton has 75569 states and 98000 transitions. Word has length 301 [2020-10-14 21:16:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:15,809 INFO L479 AbstractCegarLoop]: Abstraction has 75569 states and 98000 transitions. [2020-10-14 21:16:15,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:16:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 75569 states and 98000 transitions. [2020-10-14 21:16:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-14 21:16:15,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:15,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:16:15,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:15,821 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1108235261, now seen corresponding path program 1 times [2020-10-14 21:16:15,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:15,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191265648] [2020-10-14 21:16:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 21:16:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-14 21:16:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:18,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:16:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:16:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 21:16:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:16:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:16:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:16:19,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:19,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:16:19,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:16:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:19,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:19,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:16:19,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 21:16:19,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:19,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:16:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:16:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:16:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:19,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:19,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:16:19,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:16:19,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:19,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:16:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 319 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 21:16:19,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191265648] [2020-10-14 21:16:19,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:19,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:16:19,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873579691] [2020-10-14 21:16:19,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:16:19,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:19,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:16:19,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:16:19,906 INFO L87 Difference]: Start difference. First operand 75569 states and 98000 transitions. Second operand 9 states. [2020-10-14 21:16:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:57,548 INFO L93 Difference]: Finished difference Result 213856 states and 283729 transitions. [2020-10-14 21:16:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 21:16:57,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 392 [2020-10-14 21:16:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:58,125 INFO L225 Difference]: With dead ends: 213856 [2020-10-14 21:16:58,125 INFO L226 Difference]: Without dead ends: 138293 [2020-10-14 21:16:58,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-14 21:16:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138293 states. [2020-10-14 21:17:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138293 to 132828. [2020-10-14 21:17:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132828 states. [2020-10-14 21:17:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132828 states to 132828 states and 176021 transitions. [2020-10-14 21:17:01,447 INFO L78 Accepts]: Start accepts. Automaton has 132828 states and 176021 transitions. Word has length 392 [2020-10-14 21:17:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:01,447 INFO L479 AbstractCegarLoop]: Abstraction has 132828 states and 176021 transitions. [2020-10-14 21:17:01,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:17:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 132828 states and 176021 transitions. [2020-10-14 21:17:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-14 21:17:01,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:01,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:17:01,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:17:01,462 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1144455314, now seen corresponding path program 1 times [2020-10-14 21:17:01,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:01,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444847395] [2020-10-14 21:17:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-14 21:17:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4094 [2020-10-14 21:17:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:17:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:17:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:05,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:05,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:17:05,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:17:05,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:05,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:17:05,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-14 21:17:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:06,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:06,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:17:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:17:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:06,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:17:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-14 21:17:06,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444847395] [2020-10-14 21:17:06,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:06,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:17:06,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673106878] [2020-10-14 21:17:06,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:06,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:06,419 INFO L87 Difference]: Start difference. First operand 132828 states and 176021 transitions. Second operand 7 states.