/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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:14:31,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:14:31,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:14:31,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:14:31,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:14:31,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:14:31,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:14:31,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:14:31,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:14:31,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:14:31,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:14:31,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:14:31,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:14:31,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:14:31,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:14:31,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:14:31,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:14:31,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:14:31,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:14:31,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:14:31,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:14:31,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:14:31,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:14:31,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:14:31,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:14:31,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:14:31,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:14:31,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:14:31,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:14:31,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:14:31,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:14:31,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:14:31,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:14:31,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:14:31,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:14:31,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:14:31,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:14:31,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:14:31,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:14:31,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:14:31,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:14:31,137 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 21:14:31,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:14:31,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:14:31,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:14:31,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:14:31,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:14:31,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:14:31,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:14:31,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:14:31,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:14:31,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:14:31,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:14:31,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:14:31,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:14:31,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:14:31,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:14:31,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:14:31,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:14:31,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:14:31,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:14:31,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:14:31,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:14:31,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:14:31,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:14:31,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:14:31,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:14:31,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:14:31,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:14:31,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:14:31,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:14:31,194 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 21:14:31,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:14:31,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:14:31,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:14:31,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:14:31,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:14:31,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-14 21:14:31,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ed86eb/8a9278d1cdf74a68a09e8e4d1095604b/FLAGeac5f9a32 [2020-10-14 21:14:32,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:14:32,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-14 21:14:32,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ed86eb/8a9278d1cdf74a68a09e8e4d1095604b/FLAGeac5f9a32 [2020-10-14 21:14:32,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ed86eb/8a9278d1cdf74a68a09e8e4d1095604b [2020-10-14 21:14:32,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:14:32,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:14:32,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:32,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:14:32,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:14:32,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:32" (1/1) ... [2020-10-14 21:14:32,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc622fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:32, skipping insertion in model container [2020-10-14 21:14:32,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:32" (1/1) ... [2020-10-14 21:14:32,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:14:32,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:14:34,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:34,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:14:35,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:35,127 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:14:35,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35 WrapperNode [2020-10-14 21:14:35,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:35,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:14:35,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:14:35,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:14:35,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2020-10-14 21:14:35,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:14:35,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:14:35,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:14:35,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:14:35,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (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 21:14:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:14:35,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:14:35,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:14:35,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:14:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:14:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:14:35,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:14:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:14:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:14:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:14:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:14:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:14:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:14:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:14:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:14:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:14:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:14:41,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:14:41,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:14:41,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:41 BoogieIcfgContainer [2020-10-14 21:14:41,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:14:41,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:14:41,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:14:41,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:14:41,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:32" (1/3) ... [2020-10-14 21:14:41,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2007b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:41, skipping insertion in model container [2020-10-14 21:14:41,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (2/3) ... [2020-10-14 21:14:41,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2007b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:41, skipping insertion in model container [2020-10-14 21:14:41,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:41" (3/3) ... [2020-10-14 21:14:41,337 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label35.c [2020-10-14 21:14:41,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:14:41,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:14:41,380 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:14:41,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:14:41,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:14:41,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:14:41,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:14:41,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:14:41,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:14:41,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:14:41,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:14:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:14:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 21:14:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:41,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:14:41,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1843947562, now seen corresponding path program 1 times [2020-10-14 21:14:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650866792] [2020-10-14 21:14:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 21:14:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 21:14:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:42,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 21:14:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:14:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:42,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:42,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:42,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 21:14:42,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:42,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:42,195 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 21:14:42,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650866792] [2020-10-14 21:14:42,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:42,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:14:42,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562100976] [2020-10-14 21:14:42,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:14:42,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:42,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:14:42,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:14:42,238 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:14:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:50,866 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:14:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:50,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 21:14:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:50,903 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:14:50,903 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:14:50,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:14:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:14:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:14:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:14:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2020-10-14 21:14:51,078 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 13 [2020-10-14 21:14:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:51,079 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2020-10-14 21:14:51,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:14:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2020-10-14 21:14:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 21:14:51,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:51,087 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:14:51,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:14:51,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:51,090 INFO L82 PathProgramCache]: Analyzing trace with hash -890972585, now seen corresponding path program 1 times [2020-10-14 21:14:51,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:51,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054245421] [2020-10-14 21:14:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:14:52,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:14:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 21:14:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:14:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:14:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:14:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:52,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:14:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 21:14:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:52,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:14:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:52,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054245421] [2020-10-14 21:14:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:52,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559543456] [2020-10-14 21:14:52,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:52,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:52,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:52,747 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand 7 states. [2020-10-14 21:15:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:03,761 INFO L93 Difference]: Finished difference Result 4741 states and 8767 transitions. [2020-10-14 21:15:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:15:03,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-14 21:15:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:03,785 INFO L225 Difference]: With dead ends: 4741 [2020-10-14 21:15:03,785 INFO L226 Difference]: Without dead ends: 3194 [2020-10-14 21:15:03,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:15:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-14 21:15:03,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3150. [2020-10-14 21:15:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3150 states. [2020-10-14 21:15:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 5027 transitions. [2020-10-14 21:15:03,921 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 5027 transitions. Word has length 82 [2020-10-14 21:15:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:03,922 INFO L479 AbstractCegarLoop]: Abstraction has 3150 states and 5027 transitions. [2020-10-14 21:15:03,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 5027 transitions. [2020-10-14 21:15:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 21:15:03,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:03,926 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:15:03,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:15:03,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:03,927 INFO L82 PathProgramCache]: Analyzing trace with hash -194610813, now seen corresponding path program 1 times [2020-10-14 21:15:03,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:03,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955707390] [2020-10-14 21:15:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:15:04,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:15:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:15:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 21:15:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:04,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:15:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:04,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:15:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:04,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:04,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955707390] [2020-10-14 21:15:04,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:04,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:15:04,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274556774] [2020-10-14 21:15:04,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:04,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:04,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:04,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:04,386 INFO L87 Difference]: Start difference. First operand 3150 states and 5027 transitions. Second operand 6 states. [2020-10-14 21:15:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:20,399 INFO L93 Difference]: Finished difference Result 12614 states and 20788 transitions. [2020-10-14 21:15:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:15:20,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-14 21:15:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:20,456 INFO L225 Difference]: With dead ends: 12614 [2020-10-14 21:15:20,456 INFO L226 Difference]: Without dead ends: 9470 [2020-10-14 21:15:20,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 21:15:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2020-10-14 21:15:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 9433. [2020-10-14 21:15:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9433 states. [2020-10-14 21:15:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 13491 transitions. [2020-10-14 21:15:20,805 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 13491 transitions. Word has length 88 [2020-10-14 21:15:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:20,810 INFO L479 AbstractCegarLoop]: Abstraction has 9433 states and 13491 transitions. [2020-10-14 21:15:20,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:15:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 13491 transitions. [2020-10-14 21:15:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 21:15:20,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:20,832 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:20,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:15:20,833 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1303990225, now seen corresponding path program 1 times [2020-10-14 21:15:20,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:20,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452411664] [2020-10-14 21:15:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 21:15:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:15:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3834 [2020-10-14 21:15:24,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:24,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:15:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 21:15:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:15:24,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:24,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 21:15:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 21:15:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:15:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 21:15:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:25,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:15:25,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:15:25,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:25,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:15:25,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452411664] [2020-10-14 21:15:25,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:25,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:25,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838583355] [2020-10-14 21:15:25,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:15:25,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:25,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:15:25,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:25,536 INFO L87 Difference]: Start difference. First operand 9433 states and 13491 transitions. Second operand 8 states. [2020-10-14 21:15:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:41,254 INFO L93 Difference]: Finished difference Result 27880 states and 41421 transitions. [2020-10-14 21:15:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:15:41,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-10-14 21:15:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:41,338 INFO L225 Difference]: With dead ends: 27880 [2020-10-14 21:15:41,338 INFO L226 Difference]: Without dead ends: 16114 [2020-10-14 21:15:41,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:15:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16114 states. [2020-10-14 21:15:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16114 to 15156. [2020-10-14 21:15:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15156 states. [2020-10-14 21:15:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15156 states to 15156 states and 21339 transitions. [2020-10-14 21:15:41,817 INFO L78 Accepts]: Start accepts. Automaton has 15156 states and 21339 transitions. Word has length 200 [2020-10-14 21:15:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:41,819 INFO L479 AbstractCegarLoop]: Abstraction has 15156 states and 21339 transitions. [2020-10-14 21:15:41,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:15:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 15156 states and 21339 transitions. [2020-10-14 21:15:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 21:15:41,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:41,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:41,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:15:41,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash 174148706, now seen corresponding path program 1 times [2020-10-14 21:15:41,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:41,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833719045] [2020-10-14 21:15:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 21:15:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 21:15:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:43,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 21:15:43,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:43,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:43,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:15:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:43,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:15:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:15:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 21:15:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:43,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:15:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:43,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833719045] [2020-10-14 21:15:43,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:43,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:15:43,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594569867] [2020-10-14 21:15:43,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:15:43,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:43,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:15:43,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:15:43,932 INFO L87 Difference]: Start difference. First operand 15156 states and 21339 transitions. Second operand 8 states. [2020-10-14 21:16:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:02,694 INFO L93 Difference]: Finished difference Result 37073 states and 53453 transitions. [2020-10-14 21:16:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:16:02,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-14 21:16:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:02,773 INFO L225 Difference]: With dead ends: 37073 [2020-10-14 21:16:02,773 INFO L226 Difference]: Without dead ends: 21923 [2020-10-14 21:16:02,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:16:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21923 states. [2020-10-14 21:16:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21923 to 21003. [2020-10-14 21:16:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21003 states. [2020-10-14 21:16:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21003 states to 21003 states and 27552 transitions. [2020-10-14 21:16:03,335 INFO L78 Accepts]: Start accepts. Automaton has 21003 states and 27552 transitions. Word has length 203 [2020-10-14 21:16:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:03,336 INFO L479 AbstractCegarLoop]: Abstraction has 21003 states and 27552 transitions. [2020-10-14 21:16:03,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:16:03,336 INFO L276 IsEmpty]: Start isEmpty. Operand 21003 states and 27552 transitions. [2020-10-14 21:16:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 21:16:03,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:03,345 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:03,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:16:03,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash -660726501, now seen corresponding path program 1 times [2020-10-14 21:16:03,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:03,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169816920] [2020-10-14 21:16:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:05,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 21:16:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2353 [2020-10-14 21:16:05,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:05,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:16:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:16:05,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:05,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:06,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:16:06,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 21:16:06,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:06,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:06,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:16:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 21:16:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 21:16:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:16:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:06,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 21:16:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:16:06,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169816920] [2020-10-14 21:16:06,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:06,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:06,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606275661] [2020-10-14 21:16:06,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:06,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:06,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:06,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:06,581 INFO L87 Difference]: Start difference. First operand 21003 states and 27552 transitions. Second operand 7 states. [2020-10-14 21:16:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:26,282 INFO L93 Difference]: Finished difference Result 60245 states and 83215 transitions. [2020-10-14 21:16:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:26,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 21:16:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:26,438 INFO L225 Difference]: With dead ends: 60245 [2020-10-14 21:16:26,438 INFO L226 Difference]: Without dead ends: 39248 [2020-10-14 21:16:26,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39248 states. [2020-10-14 21:16:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39248 to 36561. [2020-10-14 21:16:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36561 states. [2020-10-14 21:16:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36561 states to 36561 states and 47485 transitions. [2020-10-14 21:16:27,397 INFO L78 Accepts]: Start accepts. Automaton has 36561 states and 47485 transitions. Word has length 294 [2020-10-14 21:16:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:27,397 INFO L479 AbstractCegarLoop]: Abstraction has 36561 states and 47485 transitions. [2020-10-14 21:16:27,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36561 states and 47485 transitions. [2020-10-14 21:16:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 21:16:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:27,410 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:16:27,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:16:27,411 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1617310374, now seen corresponding path program 1 times [2020-10-14 21:16:27,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:27,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463666450] [2020-10-14 21:16:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 21:16:32,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 21:16:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 21:16:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 21:16:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:32,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:32,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:16:32,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:16:32,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:32,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 21:16:32,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 21:16:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:16:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:16:33,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-14 21:16:33,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:33,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:33,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:16:33,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:16:33,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463666450] [2020-10-14 21:16:33,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:33,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:33,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265187954] [2020-10-14 21:16:33,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:33,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:33,804 INFO L87 Difference]: Start difference. First operand 36561 states and 47485 transitions. Second operand 7 states. [2020-10-14 21:17:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:00,868 INFO L93 Difference]: Finished difference Result 105838 states and 145937 transitions. [2020-10-14 21:17:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:17:00,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-14 21:17:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:01,159 INFO L225 Difference]: With dead ends: 105838 [2020-10-14 21:17:01,160 INFO L226 Difference]: Without dead ends: 69283 [2020-10-14 21:17:01,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69283 states. [2020-10-14 21:17:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69283 to 69144. [2020-10-14 21:17:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69144 states. [2020-10-14 21:17:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69144 states to 69144 states and 91606 transitions. [2020-10-14 21:17:03,077 INFO L78 Accepts]: Start accepts. Automaton has 69144 states and 91606 transitions. Word has length 351 [2020-10-14 21:17:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:03,078 INFO L479 AbstractCegarLoop]: Abstraction has 69144 states and 91606 transitions. [2020-10-14 21:17:03,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 69144 states and 91606 transitions. [2020-10-14 21:17:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-14 21:17:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:03,106 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:03,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:17:03,107 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1222048842, now seen corresponding path program 1 times [2020-10-14 21:17:03,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:03,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997343906] [2020-10-14 21:17:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:06,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-14 21:17:06,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3587 [2020-10-14 21:17:06,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:06,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:17:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:17:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:06,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:06,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:06,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:06,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:06,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:06,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:06,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:06,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:17:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:17:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:17:07,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:17:07,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:07,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:17:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:17:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:07,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 21:17:07,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:17:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:07,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 21:17:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 102 proven. 82 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-14 21:17:07,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997343906] [2020-10-14 21:17:07,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:07,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:17:07,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241202127] [2020-10-14 21:17:07,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:17:07,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:07,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:17:07,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:17:07,876 INFO L87 Difference]: Start difference. First operand 69144 states and 91606 transitions. Second operand 7 states. [2020-10-14 21:17:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:27,956 INFO L93 Difference]: Finished difference Result 175345 states and 242436 transitions. [2020-10-14 21:17:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:17:27,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2020-10-14 21:17:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:28,446 INFO L225 Difference]: With dead ends: 175345 [2020-10-14 21:17:28,447 INFO L226 Difference]: Without dead ends: 106974 [2020-10-14 21:17:28,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:17:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106974 states. [2020-10-14 21:17:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106974 to 103720. [2020-10-14 21:17:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103720 states. [2020-10-14 21:17:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103720 states to 103720 states and 140290 transitions. [2020-10-14 21:17:31,031 INFO L78 Accepts]: Start accepts. Automaton has 103720 states and 140290 transitions. Word has length 439 [2020-10-14 21:17:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:31,032 INFO L479 AbstractCegarLoop]: Abstraction has 103720 states and 140290 transitions. [2020-10-14 21:17:31,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 103720 states and 140290 transitions. [2020-10-14 21:17:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 21:17:31,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:31,075 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:31,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:17:31,075 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:31,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1448865193, now seen corresponding path program 1 times [2020-10-14 21:17:31,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:31,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223521882] [2020-10-14 21:17:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:36,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 21:17:36,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:17:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-14 21:17:36,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:36,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 21:17:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:17:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:17:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:17:36,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 21:17:36,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 21:17:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:17:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:37,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:17:37,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 21:17:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:37,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:17:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 21:17:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:17:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 21:17:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:37,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:17:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 253 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:17:37,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223521882] [2020-10-14 21:17:37,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:37,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:17:37,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77526681] [2020-10-14 21:17:37,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:17:37,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:17:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:17:37,866 INFO L87 Difference]: Start difference. First operand 103720 states and 140290 transitions. Second operand 8 states.