/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:49:18,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:49:18,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:49:18,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:49:18,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:49:18,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:49:18,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:49:18,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:49:18,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:49:18,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:49:18,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:49:18,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:49:18,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:49:18,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:49:18,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:49:18,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:49:18,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:49:18,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:49:18,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:49:18,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:49:18,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:49:18,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:49:18,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:49:18,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:49:18,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:49:18,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:49:18,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:49:18,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:49:18,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:49:18,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:49:18,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:49:18,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:49:18,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:49:18,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:49:18,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:49:18,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:49:18,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:49:18,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:49:18,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:49:18,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:49:18,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:49:18,254 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 02:49:18,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:49:18,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:49:18,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:49:18,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:49:18,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:49:18,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:49:18,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:49:18,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:49:18,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:49:18,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:49:18,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:49:18,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:49:18,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:49:18,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:49:18,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:49:18,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:49:18,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:49:18,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:49:18,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:49:18,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:49:18,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:49:18,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:49:18,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:49:18,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:49:18,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:49:18,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:49:18,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:49:18,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:49:18,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:49:18,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:49:18,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:49:18,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:49:18,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:49:18,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:49:18,739 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:49:18,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-14 02:49:18,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1a87f682/2aa738d4e0b34716bdd41c9f5c3da49d/FLAG1c03782ca [2020-10-14 02:49:19,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:49:19,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-14 02:49:19,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1a87f682/2aa738d4e0b34716bdd41c9f5c3da49d/FLAG1c03782ca [2020-10-14 02:49:20,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1a87f682/2aa738d4e0b34716bdd41c9f5c3da49d [2020-10-14 02:49:20,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:49:20,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:49:20,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:20,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:49:20,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:49:20,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:20" (1/1) ... [2020-10-14 02:49:20,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3eee09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:20, skipping insertion in model container [2020-10-14 02:49:20,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:49:20" (1/1) ... [2020-10-14 02:49:20,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:49:20,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:49:22,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:22,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:49:22,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:49:22,866 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:49:22,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22 WrapperNode [2020-10-14 02:49:22,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:49:22,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:49:22,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:49:22,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:49:22,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:22,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:22,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:22,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:23,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:23,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:23,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (1/1) ... [2020-10-14 02:49:23,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:49:23,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:49:23,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:49:23,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:49:23,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (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 02:49:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:49:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:49:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:49:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:49:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:49:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:49:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:49:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:49:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:49:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:49:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:49:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:49:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:49:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:49:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:49:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:49:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:49:28,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:49:28,426 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:49:28,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:28 BoogieIcfgContainer [2020-10-14 02:49:28,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:49:28,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:49:28,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:49:28,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:49:28,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:49:20" (1/3) ... [2020-10-14 02:49:28,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ec2a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:28, skipping insertion in model container [2020-10-14 02:49:28,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:49:22" (2/3) ... [2020-10-14 02:49:28,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ec2a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:49:28, skipping insertion in model container [2020-10-14 02:49:28,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:49:28" (3/3) ... [2020-10-14 02:49:28,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2020-10-14 02:49:28,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:49:28,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:49:28,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:49:28,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:49:28,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:49:28,611 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:49:28,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:49:28,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:49:28,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:49:28,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:49:28,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:49:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:49:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 02:49:28,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:28,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:49:28,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash -593043574, now seen corresponding path program 1 times [2020-10-14 02:49:28,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:28,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750505502] [2020-10-14 02:49:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 02:49:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 02:49:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:29,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:49:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:49:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:49:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:49:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:29,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:29,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 02:49:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:29,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:49:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:29,632 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 02:49:29,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750505502] [2020-10-14 02:49:29,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:49:29,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:49:29,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152699002] [2020-10-14 02:49:29,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:29,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:29,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:29,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:29,662 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 02:49:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:43,720 INFO L93 Difference]: Finished difference Result 3253 states and 6292 transitions. [2020-10-14 02:49:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:49:43,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-14 02:49:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:43,760 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 02:49:43,760 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 02:49:43,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:49:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 02:49:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 02:49:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 02:49:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 4145 transitions. [2020-10-14 02:49:43,987 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 4145 transitions. Word has length 69 [2020-10-14 02:49:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:43,989 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 4145 transitions. [2020-10-14 02:49:43,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:49:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 4145 transitions. [2020-10-14 02:49:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 02:49:43,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:44,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:49:44,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:49:44,001 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:44,001 INFO L82 PathProgramCache]: Analyzing trace with hash 198959659, now seen corresponding path program 1 times [2020-10-14 02:49:44,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:44,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586622159] [2020-10-14 02:49:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 02:49:45,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:49:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-14 02:49:45,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:45,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:49:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:49:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 02:49:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:45,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:45,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:45,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:45,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:45,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:45,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:45,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:45,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:49:45,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:49:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:45,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:49:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:45,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586622159] [2020-10-14 02:49:45,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:45,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:45,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349303904] [2020-10-14 02:49:45,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:45,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:45,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:45,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:45,900 INFO L87 Difference]: Start difference. First operand 2331 states and 4145 transitions. Second operand 5 states. [2020-10-14 02:49:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:49:57,532 INFO L93 Difference]: Finished difference Result 7006 states and 12592 transitions. [2020-10-14 02:49:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:49:57,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 02:49:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:49:57,562 INFO L225 Difference]: With dead ends: 7006 [2020-10-14 02:49:57,562 INFO L226 Difference]: Without dead ends: 4681 [2020-10-14 02:49:57,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:49:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-14 02:49:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4664. [2020-10-14 02:49:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4664 states. [2020-10-14 02:49:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 7237 transitions. [2020-10-14 02:49:57,796 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 7237 transitions. Word has length 148 [2020-10-14 02:49:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:49:57,799 INFO L479 AbstractCegarLoop]: Abstraction has 4664 states and 7237 transitions. [2020-10-14 02:49:57,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:49:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 7237 transitions. [2020-10-14 02:49:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 02:49:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:49:57,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:49:57,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:49:57,804 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:49:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:49:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1887647610, now seen corresponding path program 1 times [2020-10-14 02:49:57,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:49:57,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930459388] [2020-10-14 02:49:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:49:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 02:49:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:49:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 02:49:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:58,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:49:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:49:58,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:49:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:49:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:58,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:58,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:49:58,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:58,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:49:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:58,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:49:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:49:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:49:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:49:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:49:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:49:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:49:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:49:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:49:58,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:49:58,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:49:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:49:58,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:49:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:49:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:49:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:49:58,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930459388] [2020-10-14 02:49:58,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:49:58,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:49:58,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164236948] [2020-10-14 02:49:58,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:49:58,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:49:58,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:49:58,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:49:58,970 INFO L87 Difference]: Start difference. First operand 4664 states and 7237 transitions. Second operand 5 states. [2020-10-14 02:50:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:09,576 INFO L93 Difference]: Finished difference Result 13991 states and 22088 transitions. [2020-10-14 02:50:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:09,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-14 02:50:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:09,624 INFO L225 Difference]: With dead ends: 13991 [2020-10-14 02:50:09,625 INFO L226 Difference]: Without dead ends: 9333 [2020-10-14 02:50:09,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:50:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-10-14 02:50:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 8562. [2020-10-14 02:50:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8562 states. [2020-10-14 02:50:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 11816 transitions. [2020-10-14 02:50:09,899 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 11816 transitions. Word has length 149 [2020-10-14 02:50:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:09,905 INFO L479 AbstractCegarLoop]: Abstraction has 8562 states and 11816 transitions. [2020-10-14 02:50:09,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 11816 transitions. [2020-10-14 02:50:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 02:50:09,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:09,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:50:09,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:50:09,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:09,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:09,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1242566363, now seen corresponding path program 1 times [2020-10-14 02:50:09,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:09,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373499858] [2020-10-14 02:50:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:11,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 02:50:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-14 02:50:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:50:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:50:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:11,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:50:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:11,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:50:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:50:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:11,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:50:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:11,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373499858] [2020-10-14 02:50:11,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:11,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:11,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028436825] [2020-10-14 02:50:11,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:11,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:11,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:11,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:11,399 INFO L87 Difference]: Start difference. First operand 8562 states and 11816 transitions. Second operand 5 states. [2020-10-14 02:50:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:23,586 INFO L93 Difference]: Finished difference Result 21775 states and 31479 transitions. [2020-10-14 02:50:23,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:23,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 02:50:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:23,653 INFO L225 Difference]: With dead ends: 21775 [2020-10-14 02:50:23,653 INFO L226 Difference]: Without dead ends: 13219 [2020-10-14 02:50:23,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:50:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2020-10-14 02:50:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13215. [2020-10-14 02:50:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-14 02:50:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 18580 transitions. [2020-10-14 02:50:24,029 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 18580 transitions. Word has length 172 [2020-10-14 02:50:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:24,030 INFO L479 AbstractCegarLoop]: Abstraction has 13215 states and 18580 transitions. [2020-10-14 02:50:24,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 18580 transitions. [2020-10-14 02:50:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 02:50:24,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:24,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:50:24,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:50:24,036 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:24,036 INFO L82 PathProgramCache]: Analyzing trace with hash 609681915, now seen corresponding path program 1 times [2020-10-14 02:50:24,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:24,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042928347] [2020-10-14 02:50:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:24,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 02:50:25,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:50:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-14 02:50:25,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 02:50:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:50:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:50:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:25,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:50:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:50:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:50:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:25,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042928347] [2020-10-14 02:50:25,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:25,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:25,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623268295] [2020-10-14 02:50:25,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:25,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:25,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:25,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:25,408 INFO L87 Difference]: Start difference. First operand 13215 states and 18580 transitions. Second operand 5 states. [2020-10-14 02:50:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:41,723 INFO L93 Difference]: Finished difference Result 32646 states and 48059 transitions. [2020-10-14 02:50:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:41,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 02:50:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:41,797 INFO L225 Difference]: With dead ends: 32646 [2020-10-14 02:50:41,797 INFO L226 Difference]: Without dead ends: 19437 [2020-10-14 02:50:41,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:50:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2020-10-14 02:50:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 19429. [2020-10-14 02:50:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19429 states. [2020-10-14 02:50:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19429 states to 19429 states and 26675 transitions. [2020-10-14 02:50:42,317 INFO L78 Accepts]: Start accepts. Automaton has 19429 states and 26675 transitions. Word has length 188 [2020-10-14 02:50:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:42,318 INFO L479 AbstractCegarLoop]: Abstraction has 19429 states and 26675 transitions. [2020-10-14 02:50:42,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 19429 states and 26675 transitions. [2020-10-14 02:50:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 02:50:42,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:42,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:50:42,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:50:42,330 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash 838761430, now seen corresponding path program 1 times [2020-10-14 02:50:42,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:42,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154239632] [2020-10-14 02:50:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 02:50:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:50:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2271 [2020-10-14 02:50:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:44,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:50:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:50:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:50:44,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:44,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:44,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:44,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:50:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:44,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:44,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:50:44,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:50:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:44,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:50:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:50:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:45,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:45,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:45,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:50:45,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 02:50:45,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:45,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:50:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:50:45,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:50:45,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154239632] [2020-10-14 02:50:45,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:45,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:50:45,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975279786] [2020-10-14 02:50:45,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:50:45,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:50:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:50:45,372 INFO L87 Difference]: Start difference. First operand 19429 states and 26675 transitions. Second operand 7 states. [2020-10-14 02:51:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:07,554 INFO L93 Difference]: Finished difference Result 44643 states and 61335 transitions. [2020-10-14 02:51:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:07,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-14 02:51:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:07,650 INFO L225 Difference]: With dead ends: 44643 [2020-10-14 02:51:07,651 INFO L226 Difference]: Without dead ends: 25220 [2020-10-14 02:51:07,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 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 02:51:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25220 states. [2020-10-14 02:51:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25220 to 22860. [2020-10-14 02:51:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22860 states. [2020-10-14 02:51:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22860 states to 22860 states and 28238 transitions. [2020-10-14 02:51:08,208 INFO L78 Accepts]: Start accepts. Automaton has 22860 states and 28238 transitions. Word has length 225 [2020-10-14 02:51:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:08,209 INFO L479 AbstractCegarLoop]: Abstraction has 22860 states and 28238 transitions. [2020-10-14 02:51:08,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22860 states and 28238 transitions. [2020-10-14 02:51:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 02:51:08,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:08,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:08,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:51:08,227 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:08,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1518465418, now seen corresponding path program 1 times [2020-10-14 02:51:08,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:08,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846000615] [2020-10-14 02:51:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:12,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 02:51:12,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:51:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4245 [2020-10-14 02:51:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 02:51:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:51:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:12,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:51:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:12,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:12,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:51:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 02:51:12,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:12,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 02:51:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 02:51:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:51:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 02:51:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:51:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:13,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846000615] [2020-10-14 02:51:13,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:13,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:13,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793686769] [2020-10-14 02:51:13,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:13,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:13,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:13,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:13,202 INFO L87 Difference]: Start difference. First operand 22860 states and 28238 transitions. Second operand 7 states. [2020-10-14 02:51:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:44,741 INFO L93 Difference]: Finished difference Result 89413 states and 118420 transitions. [2020-10-14 02:51:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:44,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-14 02:51:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:45,007 INFO L225 Difference]: With dead ends: 89413 [2020-10-14 02:51:45,008 INFO L226 Difference]: Without dead ends: 60209 [2020-10-14 02:51:45,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60209 states. [2020-10-14 02:51:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60209 to 54381. [2020-10-14 02:51:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54381 states. [2020-10-14 02:51:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54381 states to 54381 states and 66144 transitions. [2020-10-14 02:51:47,792 INFO L78 Accepts]: Start accepts. Automaton has 54381 states and 66144 transitions. Word has length 273 [2020-10-14 02:51:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:47,793 INFO L479 AbstractCegarLoop]: Abstraction has 54381 states and 66144 transitions. [2020-10-14 02:51:47,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 54381 states and 66144 transitions. [2020-10-14 02:51:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 02:51:47,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:47,842 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:51:47,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:51:47,843 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 649818686, now seen corresponding path program 1 times [2020-10-14 02:51:47,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:47,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892469958] [2020-10-14 02:51:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:48,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:52,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 02:51:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:51:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 02:51:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:52,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 02:51:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:51:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:51:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:53,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 02:51:53,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:51:53,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:53,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:53,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:51:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 02:51:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:53,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:53,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 02:51:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 02:51:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:53,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:51:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:51:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-14 02:51:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:51:53,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:51:53,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:51:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:51:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 293 proven. 80 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 02:51:54,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892469958] [2020-10-14 02:51:54,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:54,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:51:54,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666647027] [2020-10-14 02:51:54,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:51:54,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:54,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:51:54,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:51:54,548 INFO L87 Difference]: Start difference. First operand 54381 states and 66144 transitions. Second operand 8 states. [2020-10-14 02:52:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:28,538 INFO L93 Difference]: Finished difference Result 137909 states and 178684 transitions. [2020-10-14 02:52:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:52:28,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 367 [2020-10-14 02:52:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:28,961 INFO L225 Difference]: With dead ends: 137909 [2020-10-14 02:52:28,962 INFO L226 Difference]: Without dead ends: 83538 [2020-10-14 02:52:29,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:52:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83538 states. [2020-10-14 02:52:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83538 to 76477. [2020-10-14 02:52:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76477 states. [2020-10-14 02:52:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76477 states to 76477 states and 95138 transitions. [2020-10-14 02:52:33,396 INFO L78 Accepts]: Start accepts. Automaton has 76477 states and 95138 transitions. Word has length 367 [2020-10-14 02:52:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:33,397 INFO L479 AbstractCegarLoop]: Abstraction has 76477 states and 95138 transitions. [2020-10-14 02:52:33,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:52:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 76477 states and 95138 transitions. [2020-10-14 02:52:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-14 02:52:33,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:33,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-10-14 02:52:33,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:52:33,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash 458616722, now seen corresponding path program 1 times [2020-10-14 02:52:33,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:33,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231838560] [2020-10-14 02:52:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 02:52:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:52:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 02:52:38,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 02:52:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:52:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:52:38,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:38,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 02:52:38,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 02:52:38,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:38,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 02:52:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 02:52:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:39,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 02:52:39,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 02:52:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:52:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:52:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:52:39,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-14 02:52:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:39,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:39,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:52:39,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:52:39,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:39,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:52:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 293 proven. 80 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 02:52:39,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231838560] [2020-10-14 02:52:39,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:39,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:52:39,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923924717] [2020-10-14 02:52:39,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:52:39,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:52:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:52:39,771 INFO L87 Difference]: Start difference. First operand 76477 states and 95138 transitions. Second operand 7 states.