/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/Problem13_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:25:58,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:25:58,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:25:58,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:25:58,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:25:58,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:25:58,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:25:58,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:25:58,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:25:58,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:25:58,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:25:58,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:25:58,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:25:58,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:25:58,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:25:58,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:25:58,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:25:58,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:25:58,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:25:58,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:25:58,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:25:58,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:25:58,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:25:58,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:25:58,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:25:58,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:25:58,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:25:58,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:25:58,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:25:58,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:25:58,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:25:58,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:25:58,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:25:58,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:25:58,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:25:58,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:25:58,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:25:58,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:25:58,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:25:58,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:25:58,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:25:58,214 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 21:25:58,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:25:58,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:25:58,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:25:58,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:25:58,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:25:58,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:25:58,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:25:58,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:25:58,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:25:58,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:25:58,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:25:58,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:25:58,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:25:58,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:25:58,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:25:58,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:25:58,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:25:58,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:25:58,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:25:58,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:25:58,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:25:58,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:25:58,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:25:58,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:25:58,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:25:58,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:25:58,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:25:58,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:25:58,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:25:58,245 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 21:25:58,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:25:58,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:25:58,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:25:58,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:25:58,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:25:58,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-14 21:25:58,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/545175101/c8c57a123301440c9c521cc513a4b2a5/FLAG89d26c1a3 [2020-10-14 21:25:59,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:25:59,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-14 21:25:59,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/545175101/c8c57a123301440c9c521cc513a4b2a5/FLAG89d26c1a3 [2020-10-14 21:25:59,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/545175101/c8c57a123301440c9c521cc513a4b2a5 [2020-10-14 21:25:59,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:25:59,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:25:59,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:25:59,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:25:59,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:25:59,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:59" (1/1) ... [2020-10-14 21:25:59,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bae0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:59, skipping insertion in model container [2020-10-14 21:25:59,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:59" (1/1) ... [2020-10-14 21:26:00,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:26:00,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:26:01,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:01,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:26:02,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:02,653 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:26:02,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02 WrapperNode [2020-10-14 21:26:02,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:02,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:26:02,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:26:02,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:26:02,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:02,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:03,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... [2020-10-14 21:26:03,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:26:03,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:26:03,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:26:03,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:26:03,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:26:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:26:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:26:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:26:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:26:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:26:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:26:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:26:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:26:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:26:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:26:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:26:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:26:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:26:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:26:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:26:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:26:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:26:14,725 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:26:14,725 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:26:14,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:14 BoogieIcfgContainer [2020-10-14 21:26:14,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:26:14,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:26:14,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:26:14,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:26:14,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:25:59" (1/3) ... [2020-10-14 21:26:14,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b553d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:14, skipping insertion in model container [2020-10-14 21:26:14,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:02" (2/3) ... [2020-10-14 21:26:14,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b553d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:14, skipping insertion in model container [2020-10-14 21:26:14,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:14" (3/3) ... [2020-10-14 21:26:14,753 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2020-10-14 21:26:14,766 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:26:14,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:26:14,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:26:14,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:26:14,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:26:14,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:26:14,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:26:14,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:26:14,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:26:14,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:26:14,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:26:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:26:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 21:26:14,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:14,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:26:14,894 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash -495994913, now seen corresponding path program 1 times [2020-10-14 21:26:14,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:14,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768089796] [2020-10-14 21:26:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:15,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:15,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 21:26:15,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-14 21:26:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:15,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 21:26:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:26:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:15,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:15,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:15,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:26:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:15,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:15,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:15,665 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 21:26:15,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768089796] [2020-10-14 21:26:15,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:15,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:26:15,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428026661] [2020-10-14 21:26:15,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:26:15,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:15,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:26:15,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:26:15,693 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:26:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:30,537 INFO L93 Difference]: Finished difference Result 3118 states and 5748 transitions. [2020-10-14 21:26:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:26:30,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 21:26:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:30,571 INFO L225 Difference]: With dead ends: 3118 [2020-10-14 21:26:30,572 INFO L226 Difference]: Without dead ends: 1935 [2020-10-14 21:26:30,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:26:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-14 21:26:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1917. [2020-10-14 21:26:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-14 21:26:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2935 transitions. [2020-10-14 21:26:30,744 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2935 transitions. Word has length 28 [2020-10-14 21:26:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:30,745 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2935 transitions. [2020-10-14 21:26:30,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:26:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2935 transitions. [2020-10-14 21:26:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 21:26:30,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:30,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:30,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:26:30,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash 784865347, now seen corresponding path program 1 times [2020-10-14 21:26:30,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:30,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416091324] [2020-10-14 21:26:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:32,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:26:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:26:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-14 21:26:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:32,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:26:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:26:32,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:26:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:32,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:26:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:32,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:26:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:26:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 21:26:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:32,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:26:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:26:32,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416091324] [2020-10-14 21:26:32,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:26:32,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:26:32,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165211023] [2020-10-14 21:26:32,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:26:32,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:32,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:26:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:26:32,860 INFO L87 Difference]: Start difference. First operand 1917 states and 2935 transitions. Second operand 8 states. [2020-10-14 21:26:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:56,169 INFO L93 Difference]: Finished difference Result 7309 states and 11377 transitions. [2020-10-14 21:26:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:26:56,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-14 21:26:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:56,206 INFO L225 Difference]: With dead ends: 7309 [2020-10-14 21:26:56,207 INFO L226 Difference]: Without dead ends: 5398 [2020-10-14 21:26:56,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:26:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2020-10-14 21:26:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 5354. [2020-10-14 21:26:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5354 states. [2020-10-14 21:26:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 7469 transitions. [2020-10-14 21:26:56,386 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 7469 transitions. Word has length 104 [2020-10-14 21:26:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 5354 states and 7469 transitions. [2020-10-14 21:26:56,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:26:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 7469 transitions. [2020-10-14 21:26:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 21:26:56,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:56,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:56,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:26:56,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:56,402 INFO L82 PathProgramCache]: Analyzing trace with hash 489415708, now seen corresponding path program 1 times [2020-10-14 21:26:56,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:56,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261849003] [2020-10-14 21:26:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:26:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:26:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-10-14 21:26:57,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:57,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:26:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:58,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:26:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:58,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:58,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 21:26:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 21:26:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:58,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:58,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:26:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:58,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261849003] [2020-10-14 21:26:58,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:58,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:58,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118474743] [2020-10-14 21:26:58,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:58,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:58,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:58,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:58,593 INFO L87 Difference]: Start difference. First operand 5354 states and 7469 transitions. Second operand 7 states. [2020-10-14 21:27:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:21,928 INFO L93 Difference]: Finished difference Result 15111 states and 22036 transitions. [2020-10-14 21:27:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:27:21,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-14 21:27:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:21,989 INFO L225 Difference]: With dead ends: 15111 [2020-10-14 21:27:21,990 INFO L226 Difference]: Without dead ends: 9763 [2020-10-14 21:27:22,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:27:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2020-10-14 21:27:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 9650. [2020-10-14 21:27:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9650 states. [2020-10-14 21:27:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9650 states to 9650 states and 12452 transitions. [2020-10-14 21:27:22,354 INFO L78 Accepts]: Start accepts. Automaton has 9650 states and 12452 transitions. Word has length 146 [2020-10-14 21:27:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:22,357 INFO L479 AbstractCegarLoop]: Abstraction has 9650 states and 12452 transitions. [2020-10-14 21:27:22,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9650 states and 12452 transitions. [2020-10-14 21:27:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 21:27:22,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:22,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:27:22,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:27:22,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:22,368 INFO L82 PathProgramCache]: Analyzing trace with hash -163498237, now seen corresponding path program 1 times [2020-10-14 21:27:22,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:22,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106963991] [2020-10-14 21:27:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 21:27:26,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:27:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3751 [2020-10-14 21:27:26,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:27:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:27:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:26,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:27:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:27:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:27:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:27:26,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:27:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:27:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:27:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:27:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:27:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:26,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:27:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:27:26,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106963991] [2020-10-14 21:27:26,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:26,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:27:26,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144077748] [2020-10-14 21:27:26,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:26,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:26,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:26,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:27,000 INFO L87 Difference]: Start difference. First operand 9650 states and 12452 transitions. Second operand 7 states. [2020-10-14 21:27:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:54,865 INFO L93 Difference]: Finished difference Result 26493 states and 35737 transitions. [2020-10-14 21:27:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:27:54,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-14 21:27:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:54,952 INFO L225 Difference]: With dead ends: 26493 [2020-10-14 21:27:54,952 INFO L226 Difference]: Without dead ends: 17652 [2020-10-14 21:27:54,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 21:27:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17652 states. [2020-10-14 21:27:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17652 to 17448. [2020-10-14 21:27:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17448 states. [2020-10-14 21:27:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17448 states to 17448 states and 23482 transitions. [2020-10-14 21:27:55,542 INFO L78 Accepts]: Start accepts. Automaton has 17448 states and 23482 transitions. Word has length 228 [2020-10-14 21:27:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:55,544 INFO L479 AbstractCegarLoop]: Abstraction has 17448 states and 23482 transitions. [2020-10-14 21:27:55,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 17448 states and 23482 transitions. [2020-10-14 21:27:55,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 21:27:55,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:55,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:27:55,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:27:55,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:55,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1733123628, now seen corresponding path program 1 times [2020-10-14 21:27:55,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:55,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578269891] [2020-10-14 21:27:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:55,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:58,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 21:27:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:27:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-14 21:27:58,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:58,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:27:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 21:27:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:58,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:27:58,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:58,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:27:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 21:27:58,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:58,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:27:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:27:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:27:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:58,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:58,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:27:58,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 21:27:58,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:58,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:27:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:27:59,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578269891] [2020-10-14 21:27:59,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:59,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:27:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260186649] [2020-10-14 21:27:59,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:59,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:59,053 INFO L87 Difference]: Start difference. First operand 17448 states and 23482 transitions. Second operand 7 states. [2020-10-14 21:28:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:31,019 INFO L93 Difference]: Finished difference Result 48796 states and 70057 transitions. [2020-10-14 21:28:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:28:31,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-14 21:28:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:31,150 INFO L225 Difference]: With dead ends: 48796 [2020-10-14 21:28:31,150 INFO L226 Difference]: Without dead ends: 32157 [2020-10-14 21:28:31,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:28:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32157 states. [2020-10-14 21:28:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32157 to 31145. [2020-10-14 21:28:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31145 states. [2020-10-14 21:28:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31145 states to 31145 states and 41219 transitions. [2020-10-14 21:28:31,972 INFO L78 Accepts]: Start accepts. Automaton has 31145 states and 41219 transitions. Word has length 233 [2020-10-14 21:28:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:31,973 INFO L479 AbstractCegarLoop]: Abstraction has 31145 states and 41219 transitions. [2020-10-14 21:28:31,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:28:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31145 states and 41219 transitions. [2020-10-14 21:28:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 21:28:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:31,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:28:31,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:28:31,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:31,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1348059915, now seen corresponding path program 1 times [2020-10-14 21:28:31,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:31,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93161767] [2020-10-14 21:28:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:33,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 21:28:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:28:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-10-14 21:28:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:33,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 21:28:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:28:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:33,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:33,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:33,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:33,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:28:33,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:33,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 21:28:33,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:33,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:28:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:28:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:28:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:35,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:35,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:28:35,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:28:35,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:35,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:28:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:28:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:28:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:28:35,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93161767] [2020-10-14 21:28:35,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:28:35,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:28:35,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537939393] [2020-10-14 21:28:35,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:28:35,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:35,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:28:35,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:28:35,751 INFO L87 Difference]: Start difference. First operand 31145 states and 41219 transitions. Second operand 6 states. [2020-10-14 21:28:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:59,429 INFO L93 Difference]: Finished difference Result 52441 states and 70810 transitions. [2020-10-14 21:28:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:28:59,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2020-10-14 21:28:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:59,557 INFO L225 Difference]: With dead ends: 52441 [2020-10-14 21:28:59,558 INFO L226 Difference]: Without dead ends: 31138 [2020-10-14 21:28:59,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31138 states. [2020-10-14 21:29:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31138 to 31132. [2020-10-14 21:29:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31132 states. [2020-10-14 21:29:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31132 states to 31132 states and 41183 transitions. [2020-10-14 21:29:00,322 INFO L78 Accepts]: Start accepts. Automaton has 31132 states and 41183 transitions. Word has length 247 [2020-10-14 21:29:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:00,323 INFO L479 AbstractCegarLoop]: Abstraction has 31132 states and 41183 transitions. [2020-10-14 21:29:00,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:29:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 31132 states and 41183 transitions. [2020-10-14 21:29:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 21:29:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:00,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:29:00,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:29:00,329 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash -872001238, now seen corresponding path program 1 times [2020-10-14 21:29:00,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:00,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432583626] [2020-10-14 21:29:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 21:29:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-10-14 21:29:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:29:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:29:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:02,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:29:02,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:02,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:02,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:02,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:29:02,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:29:02,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:02,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:29:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:29:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:02,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:02,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:29:02,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 21:29:02,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:02,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:02,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:29:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:29:03,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432583626] [2020-10-14 21:29:03,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:03,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:03,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331194092] [2020-10-14 21:29:03,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:03,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:03,127 INFO L87 Difference]: Start difference. First operand 31132 states and 41183 transitions. Second operand 7 states. [2020-10-14 21:29:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:43,755 INFO L93 Difference]: Finished difference Result 73106 states and 102114 transitions. [2020-10-14 21:29:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:29:43,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-14 21:29:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:43,925 INFO L225 Difference]: With dead ends: 73106 [2020-10-14 21:29:43,925 INFO L226 Difference]: Without dead ends: 51816 [2020-10-14 21:29:43,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:29:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51816 states. [2020-10-14 21:29:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51816 to 45000. [2020-10-14 21:29:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45000 states. [2020-10-14 21:29:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45000 states to 45000 states and 57841 transitions. [2020-10-14 21:29:44,938 INFO L78 Accepts]: Start accepts. Automaton has 45000 states and 57841 transitions. Word has length 252 [2020-10-14 21:29:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:44,939 INFO L479 AbstractCegarLoop]: Abstraction has 45000 states and 57841 transitions. [2020-10-14 21:29:44,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 45000 states and 57841 transitions. [2020-10-14 21:29:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 21:29:44,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:44,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 21:29:44,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:29:44,946 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash 412179835, now seen corresponding path program 1 times [2020-10-14 21:29:44,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:44,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283532470] [2020-10-14 21:29:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:45,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:29:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 21:29:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:50,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:29:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:50,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:50,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:50,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:29:50,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:50,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:50,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:29:50,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:29:50,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:50,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:29:50,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:50,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:29:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:50,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:29:50,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:29:50,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:50,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 21:29:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:50,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 21:29:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:29:50,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:29:50,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:50,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 21:29:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 63 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:29:50,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283532470] [2020-10-14 21:29:50,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:50,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:50,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648686054] [2020-10-14 21:29:50,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:50,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:50,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:50,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:50,837 INFO L87 Difference]: Start difference. First operand 45000 states and 57841 transitions. Second operand 7 states.