/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:23:05,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:23:05,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:23:05,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:23:05,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:23:05,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:23:05,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:23:05,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:23:05,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:23:05,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:23:05,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:23:05,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:23:05,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:23:05,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:23:05,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:23:05,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:23:05,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:23:05,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:23:05,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:23:05,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:23:05,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:23:05,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:23:05,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:23:05,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:23:05,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:23:05,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:23:05,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:23:05,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:23:05,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:23:05,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:23:05,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:23:05,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:23:05,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:23:05,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:23:05,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:23:05,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:23:05,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:23:05,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:23:05,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:23:05,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:23:05,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:23:05,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:23:05,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:23:05,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:23:05,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:23:05,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:23:05,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:23:05,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:23:05,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:23:05,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:23:05,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:23:05,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:23:05,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:23:05,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:23:05,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:23:05,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:23:05,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:23:05,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:23:05,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:23:05,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:23:05,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:23:05,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:23:05,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:23:05,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:05,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:23:05,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:23:05,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:23:05,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:23:05,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:23:05,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:23:05,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:23:05,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:23:05,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:23:05,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:23:05,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:23:05,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:23:05,563 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:23:05,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-14 22:23:05,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39bb9424/f835f3213212473db8af536f0430d981/FLAG9125b3625 [2020-10-14 22:23:06,313 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:23:06,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-14 22:23:06,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39bb9424/f835f3213212473db8af536f0430d981/FLAG9125b3625 [2020-10-14 22:23:06,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a39bb9424/f835f3213212473db8af536f0430d981 [2020-10-14 22:23:06,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:23:06,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:23:06,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:06,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:23:06,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:23:06,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:06" (1/1) ... [2020-10-14 22:23:06,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bee85d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:06, skipping insertion in model container [2020-10-14 22:23:06,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:06" (1/1) ... [2020-10-14 22:23:06,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:23:06,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:23:07,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:07,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:23:08,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:08,106 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:23:08,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08 WrapperNode [2020-10-14 22:23:08,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:08,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:23:08,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:23:08,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:23:08,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (1/1) ... [2020-10-14 22:23:08,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:23:08,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:23:08,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:23:08,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:23:08,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (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 22:23:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:23:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:23:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:23:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:23:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:23:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:23:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:23:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:23:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:23:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:23:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:23:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:23:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:23:17,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:23:17,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:23:17,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:17 BoogieIcfgContainer [2020-10-14 22:23:17,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:23:17,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:23:17,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:23:17,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:23:17,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:06" (1/3) ... [2020-10-14 22:23:17,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:17, skipping insertion in model container [2020-10-14 22:23:17,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:08" (2/3) ... [2020-10-14 22:23:17,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:17, skipping insertion in model container [2020-10-14 22:23:17,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:17" (3/3) ... [2020-10-14 22:23:17,245 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2020-10-14 22:23:17,257 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:23:17,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:23:17,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:23:17,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:23:17,317 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:23:17,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:23:17,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:23:17,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:23:17,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:23:17,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:23:17,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:23:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:23:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 22:23:17,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:17,386 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] [2020-10-14 22:23:17,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:17,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1065858481, now seen corresponding path program 1 times [2020-10-14 22:23:17,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:17,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513882767] [2020-10-14 22:23:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 22:23:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 22:23:18,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:18,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:18,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:23:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:18,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 22:23:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:23:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:18,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:23:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:18,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:23:18,412 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 22:23:18,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513882767] [2020-10-14 22:23:18,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:23:18,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:23:18,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223459322] [2020-10-14 22:23:18,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:23:18,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:18,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:23:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:23:18,443 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:23:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:23:30,946 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:23:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:23:30,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 22:23:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:23:30,973 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:23:30,973 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:23:30,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:23:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:23:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:23:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:23:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:23:31,100 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 60 [2020-10-14 22:23:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:23:31,101 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:23:31,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:23:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:23:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 22:23:31,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:31,108 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, 1, 1, 1, 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 22:23:31,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:23:31,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash 856983708, now seen corresponding path program 1 times [2020-10-14 22:23:31,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:31,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446601540] [2020-10-14 22:23:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 22:23:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:23:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-14 22:23:32,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:32,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:23:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 22:23:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:23:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:32,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:23:32,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:32,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:32,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:23:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:32,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:23:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:23:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 22:23:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:33,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:23:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:23:33,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:23:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:23:33,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446601540] [2020-10-14 22:23:33,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:23:33,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:23:33,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732991233] [2020-10-14 22:23:33,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:23:33,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:23:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:23:33,134 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 22:23:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:23:43,731 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-14 22:23:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:23:43,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 22:23:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:23:43,743 INFO L225 Difference]: With dead ends: 2451 [2020-10-14 22:23:43,744 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 22:23:43,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:23:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 22:23:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-14 22:23:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 22:23:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1972 transitions. [2020-10-14 22:23:43,816 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1972 transitions. Word has length 131 [2020-10-14 22:23:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:23:43,819 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1972 transitions. [2020-10-14 22:23:43,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:23:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1972 transitions. [2020-10-14 22:23:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 22:23:43,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:43,832 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, 1, 1, 1, 1, 1, 1, 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 22:23:43,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:23:43,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:43,833 INFO L82 PathProgramCache]: Analyzing trace with hash 264021352, now seen corresponding path program 1 times [2020-10-14 22:23:43,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:43,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941116102] [2020-10-14 22:23:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:44,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:23:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:23:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-14 22:23:45,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:45,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:23:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:23:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:45,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:23:45,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:45,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:23:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:46,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:46,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:23:46,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 22:23:46,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:46,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:23:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:23:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:23:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:23:46,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941116102] [2020-10-14 22:23:46,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:23:46,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:23:46,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090983505] [2020-10-14 22:23:46,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:23:46,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:23:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:23:46,531 INFO L87 Difference]: Start difference. First operand 1452 states and 1972 transitions. Second operand 8 states. [2020-10-14 22:24:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:00,006 INFO L93 Difference]: Finished difference Result 3482 states and 5001 transitions. [2020-10-14 22:24:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:24:00,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-14 22:24:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:00,025 INFO L225 Difference]: With dead ends: 3482 [2020-10-14 22:24:00,025 INFO L226 Difference]: Without dead ends: 2469 [2020-10-14 22:24:00,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:24:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-10-14 22:24:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2414. [2020-10-14 22:24:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2414 states. [2020-10-14 22:24:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3182 transitions. [2020-10-14 22:24:00,098 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3182 transitions. Word has length 134 [2020-10-14 22:24:00,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:00,099 INFO L479 AbstractCegarLoop]: Abstraction has 2414 states and 3182 transitions. [2020-10-14 22:24:00,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:24:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3182 transitions. [2020-10-14 22:24:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 22:24:00,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:00,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:00,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:24:00,103 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:00,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:00,104 INFO L82 PathProgramCache]: Analyzing trace with hash -48282947, now seen corresponding path program 1 times [2020-10-14 22:24:00,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:00,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906587413] [2020-10-14 22:24:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 22:24:01,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-14 22:24:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:01,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:24:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:24:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:24:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:01,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:02,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:02,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:24:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 22:24:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:02,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:24:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:02,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906587413] [2020-10-14 22:24:02,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:24:02,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:24:02,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686592735] [2020-10-14 22:24:02,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:24:02,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:24:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:24:02,163 INFO L87 Difference]: Start difference. First operand 2414 states and 3182 transitions. Second operand 8 states. [2020-10-14 22:24:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:17,582 INFO L93 Difference]: Finished difference Result 8150 states and 11359 transitions. [2020-10-14 22:24:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:24:17,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-10-14 22:24:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:17,614 INFO L225 Difference]: With dead ends: 8150 [2020-10-14 22:24:17,615 INFO L226 Difference]: Without dead ends: 5256 [2020-10-14 22:24:17,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:24:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2020-10-14 22:24:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 5184. [2020-10-14 22:24:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5184 states. [2020-10-14 22:24:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 6309 transitions. [2020-10-14 22:24:17,777 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 6309 transitions. Word has length 175 [2020-10-14 22:24:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:17,779 INFO L479 AbstractCegarLoop]: Abstraction has 5184 states and 6309 transitions. [2020-10-14 22:24:17,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:24:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 6309 transitions. [2020-10-14 22:24:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 22:24:17,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:17,783 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:17,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:24:17,784 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:17,784 INFO L82 PathProgramCache]: Analyzing trace with hash 5281837, now seen corresponding path program 1 times [2020-10-14 22:24:17,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:17,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433176944] [2020-10-14 22:24:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 22:24:18,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 22:24:18,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:24:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:24:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:24:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:24:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:24:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 22:24:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:24:18,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:24:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:24:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:24:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 22:24:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:19,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:24:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:24:19,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433176944] [2020-10-14 22:24:19,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:19,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:24:19,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345895737] [2020-10-14 22:24:19,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:24:19,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:19,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:24:19,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:24:19,376 INFO L87 Difference]: Start difference. First operand 5184 states and 6309 transitions. Second operand 8 states. [2020-10-14 22:24:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:33,691 INFO L93 Difference]: Finished difference Result 9972 states and 12648 transitions. [2020-10-14 22:24:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:24:33,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-10-14 22:24:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:33,720 INFO L225 Difference]: With dead ends: 9972 [2020-10-14 22:24:33,721 INFO L226 Difference]: Without dead ends: 5226 [2020-10-14 22:24:33,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:24:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2020-10-14 22:24:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5193. [2020-10-14 22:24:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5193 states. [2020-10-14 22:24:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 6366 transitions. [2020-10-14 22:24:33,872 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 6366 transitions. Word has length 220 [2020-10-14 22:24:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:33,872 INFO L479 AbstractCegarLoop]: Abstraction has 5193 states and 6366 transitions. [2020-10-14 22:24:33,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:24:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 6366 transitions. [2020-10-14 22:24:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 22:24:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:33,877 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, 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 22:24:33,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:24:33,877 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash 52415849, now seen corresponding path program 1 times [2020-10-14 22:24:33,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:33,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435532042] [2020-10-14 22:24:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:34,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 22:24:37,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:24:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-10-14 22:24:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:37,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:24:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:24:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:24:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:38,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:24:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:38,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:24:38,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:38,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:38,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:24:38,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 22:24:38,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:38,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:24:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:24:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:24:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:24:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:24:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:38,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:24:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 175 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:24:38,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435532042] [2020-10-14 22:24:38,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:38,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:24:38,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436969367] [2020-10-14 22:24:38,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:24:38,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:24:38,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:24:38,665 INFO L87 Difference]: Start difference. First operand 5193 states and 6366 transitions. Second operand 10 states. [2020-10-14 22:24:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:59,254 INFO L93 Difference]: Finished difference Result 12404 states and 15554 transitions. [2020-10-14 22:24:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:24:59,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-10-14 22:24:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:59,290 INFO L225 Difference]: With dead ends: 12404 [2020-10-14 22:24:59,290 INFO L226 Difference]: Without dead ends: 7650 [2020-10-14 22:24:59,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:24:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2020-10-14 22:24:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 7523. [2020-10-14 22:24:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2020-10-14 22:24:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 8923 transitions. [2020-10-14 22:24:59,501 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 8923 transitions. Word has length 222 [2020-10-14 22:24:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:59,502 INFO L479 AbstractCegarLoop]: Abstraction has 7523 states and 8923 transitions. [2020-10-14 22:24:59,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:24:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 8923 transitions. [2020-10-14 22:24:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 22:24:59,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:59,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:24:59,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:24:59,510 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash 57943764, now seen corresponding path program 1 times [2020-10-14 22:24:59,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:59,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752486125] [2020-10-14 22:24:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 22:25:04,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:25:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 22:25:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:04,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:25:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:25:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:04,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 51 [2020-10-14 22:25:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:25:05,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:05,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:25:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:25:05,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752486125] [2020-10-14 22:25:05,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:05,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:25:05,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140717039] [2020-10-14 22:25:05,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:25:05,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:25:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:25:05,283 INFO L87 Difference]: Start difference. First operand 7523 states and 8923 transitions. Second operand 6 states. [2020-10-14 22:25:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:21,148 INFO L93 Difference]: Finished difference Result 15057 states and 18289 transitions. [2020-10-14 22:25:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:25:21,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2020-10-14 22:25:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:21,179 INFO L225 Difference]: With dead ends: 15057 [2020-10-14 22:25:21,179 INFO L226 Difference]: Without dead ends: 7975 [2020-10-14 22:25:21,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2020-10-14 22:25:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 7956. [2020-10-14 22:25:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7956 states. [2020-10-14 22:25:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7956 states to 7956 states and 9721 transitions. [2020-10-14 22:25:21,355 INFO L78 Accepts]: Start accepts. Automaton has 7956 states and 9721 transitions. Word has length 233 [2020-10-14 22:25:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:21,355 INFO L479 AbstractCegarLoop]: Abstraction has 7956 states and 9721 transitions. [2020-10-14 22:25:21,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:25:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 7956 states and 9721 transitions. [2020-10-14 22:25:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 22:25:21,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:21,364 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:25:21,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:25:21,364 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1749700071, now seen corresponding path program 1 times [2020-10-14 22:25:21,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:21,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584152233] [2020-10-14 22:25:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:22,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 22:25:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-14 22:25:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:22,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:25:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:25:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:23,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:23,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:25:23,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:23,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:23,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:23,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:25:23,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:23,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:23,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:23,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:25:23,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:25:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:25:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 22:25:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:23,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:25:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:25:23,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584152233] [2020-10-14 22:25:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:23,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:25:23,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120218241] [2020-10-14 22:25:23,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:25:23,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:25:23,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:23,835 INFO L87 Difference]: Start difference. First operand 7956 states and 9721 transitions. Second operand 7 states. [2020-10-14 22:25:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:44,364 INFO L93 Difference]: Finished difference Result 22504 states and 28252 transitions. [2020-10-14 22:25:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:25:44,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-14 22:25:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:44,436 INFO L225 Difference]: With dead ends: 22504 [2020-10-14 22:25:44,436 INFO L226 Difference]: Without dead ends: 14520 [2020-10-14 22:25:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:25:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14520 states. [2020-10-14 22:25:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14520 to 12193. [2020-10-14 22:25:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12193 states. [2020-10-14 22:25:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12193 states to 12193 states and 15198 transitions. [2020-10-14 22:25:44,832 INFO L78 Accepts]: Start accepts. Automaton has 12193 states and 15198 transitions. Word has length 304 [2020-10-14 22:25:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:44,833 INFO L479 AbstractCegarLoop]: Abstraction has 12193 states and 15198 transitions. [2020-10-14 22:25:44,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:25:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12193 states and 15198 transitions. [2020-10-14 22:25:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 22:25:44,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:44,846 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:25:44,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:25:44,847 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1431931025, now seen corresponding path program 1 times [2020-10-14 22:25:44,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:44,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457503674] [2020-10-14 22:25:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:49,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:49,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 22:25:49,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:25:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4666 [2020-10-14 22:25:49,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:49,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:25:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:49,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:25:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:49,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:49,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:25:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:49,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:50,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:50,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:25:50,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:50,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:25:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:25:50,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:25:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:50,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:25:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:25:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:50,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:50,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 297 proven. 91 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:25:50,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457503674] [2020-10-14 22:25:50,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:50,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:25:50,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641783085] [2020-10-14 22:25:50,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:25:50,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:50,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:25:50,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:25:50,732 INFO L87 Difference]: Start difference. First operand 12193 states and 15198 transitions. Second operand 11 states. [2020-10-14 22:26:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:13,535 INFO L93 Difference]: Finished difference Result 28673 states and 37375 transitions. [2020-10-14 22:26:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 22:26:13,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 308 [2020-10-14 22:26:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:13,627 INFO L225 Difference]: With dead ends: 28673 [2020-10-14 22:26:13,627 INFO L226 Difference]: Without dead ends: 16921 [2020-10-14 22:26:13,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-14 22:26:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16921 states. [2020-10-14 22:26:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16921 to 15792. [2020-10-14 22:26:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15792 states. [2020-10-14 22:26:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15792 states to 15792 states and 19286 transitions. [2020-10-14 22:26:14,093 INFO L78 Accepts]: Start accepts. Automaton has 15792 states and 19286 transitions. Word has length 308 [2020-10-14 22:26:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:14,094 INFO L479 AbstractCegarLoop]: Abstraction has 15792 states and 19286 transitions. [2020-10-14 22:26:14,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:26:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 15792 states and 19286 transitions. [2020-10-14 22:26:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 22:26:14,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:14,103 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:14,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:26:14,104 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash 650466253, now seen corresponding path program 1 times [2020-10-14 22:26:14,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:14,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439679096] [2020-10-14 22:26:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 22:26:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:26:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4655 [2020-10-14 22:26:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:26:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:26:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:18,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:19,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:26:19,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:19,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:19,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:19,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:19,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:26:19,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:19,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:26:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:26:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:19,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:26:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 256 proven. 54 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 22:26:19,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439679096] [2020-10-14 22:26:19,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:19,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:19,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153365501] [2020-10-14 22:26:19,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:19,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:19,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:19,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:19,464 INFO L87 Difference]: Start difference. First operand 15792 states and 19286 transitions. Second operand 7 states. [2020-10-14 22:26:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:49,188 INFO L93 Difference]: Finished difference Result 37195 states and 46319 transitions. [2020-10-14 22:26:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:26:49,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-14 22:26:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:49,288 INFO L225 Difference]: With dead ends: 37195 [2020-10-14 22:26:49,289 INFO L226 Difference]: Without dead ends: 21335 [2020-10-14 22:26:49,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:26:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21335 states. [2020-10-14 22:26:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21335 to 20344. [2020-10-14 22:26:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20344 states. [2020-10-14 22:26:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20344 states to 20344 states and 24873 transitions. [2020-10-14 22:26:49,971 INFO L78 Accepts]: Start accepts. Automaton has 20344 states and 24873 transitions. Word has length 310 [2020-10-14 22:26:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:49,972 INFO L479 AbstractCegarLoop]: Abstraction has 20344 states and 24873 transitions. [2020-10-14 22:26:49,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:26:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20344 states and 24873 transitions. [2020-10-14 22:26:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-14 22:26:49,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:49,986 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:49,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:26:49,986 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1785010479, now seen corresponding path program 1 times [2020-10-14 22:26:49,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:49,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112114514] [2020-10-14 22:26:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4087 [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:26:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:54,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:54,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:26:54,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:26:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:26:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:54,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:26:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:26:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 247 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:26:54,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112114514] [2020-10-14 22:26:54,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:54,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:54,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472399298] [2020-10-14 22:26:54,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:54,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:55,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:55,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:55,000 INFO L87 Difference]: Start difference. First operand 20344 states and 24873 transitions. Second operand 7 states.