/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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:23:38,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:23:38,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:23:38,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:23:38,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:23:38,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:23:38,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:23:38,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:23:38,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:23:38,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:23:38,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:23:38,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:23:38,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:23:38,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:23:38,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:23:38,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:23:38,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:23:38,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:23:38,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:23:38,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:23:38,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:23:38,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:23:38,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:23:38,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:23:38,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:23:38,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:23:38,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:23:38,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:23:38,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:23:38,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:23:38,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:23:38,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:23:38,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:23:38,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:23:38,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:23:38,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:23:38,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:23:38,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:23:38,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:23:38,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:23:38,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:23:38,150 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 22:23:38,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:23:38,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:23:38,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:23:38,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:23:38,174 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:23:38,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:23:38,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:23:38,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:23:38,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:23:38,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:23:38,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:23:38,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:23:38,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:23:38,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:23:38,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:23:38,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:23:38,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:23:38,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:23:38,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:23:38,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:23:38,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:23:38,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:38,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:23:38,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:23:38,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:23:38,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:23:38,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:23:38,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:23:38,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:23:38,179 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 22:23:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:23:38,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:23:38,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:23:38,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:23:38,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:23:38,540 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-14 22:23:38,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dda76df0/f263c1f50c4a46b89d22339bf2be9223/FLAG9e64e61b0 [2020-10-14 22:23:39,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:23:39,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-14 22:23:39,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dda76df0/f263c1f50c4a46b89d22339bf2be9223/FLAG9e64e61b0 [2020-10-14 22:23:39,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dda76df0/f263c1f50c4a46b89d22339bf2be9223 [2020-10-14 22:23:39,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:23:39,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:23:39,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:39,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:23:39,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:23:39,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:39" (1/1) ... [2020-10-14 22:23:39,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:39, skipping insertion in model container [2020-10-14 22:23:39,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:39" (1/1) ... [2020-10-14 22:23:39,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:23:39,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:23:40,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:40,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:23:41,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:41,282 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:23:41,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41 WrapperNode [2020-10-14 22:23:41,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:41,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:23:41,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:23:41,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:23:41,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (1/1) ... [2020-10-14 22:23:41,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:23:41,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:23:41,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:23:41,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:23:41,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (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 22:23:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:23:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:23:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:23:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:23:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:23:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:23:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:23:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:23:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:23:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:23:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:23:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:23:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:23:48,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:23:48,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:23:48,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:48 BoogieIcfgContainer [2020-10-14 22:23:48,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:23:48,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:23:48,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:23:48,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:23:48,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:39" (1/3) ... [2020-10-14 22:23:48,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7401adba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:48, skipping insertion in model container [2020-10-14 22:23:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:41" (2/3) ... [2020-10-14 22:23:48,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7401adba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:23:48, skipping insertion in model container [2020-10-14 22:23:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:23:48" (3/3) ... [2020-10-14 22:23:48,222 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2020-10-14 22:23:48,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:23:48,241 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:23:48,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:23:48,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:23:48,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:23:48,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:23:48,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:23:48,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:23:48,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:23:48,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:23:48,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:23:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:23:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 22:23:48,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:48,323 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] [2020-10-14 22:23:48,324 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:48,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1223613225, now seen corresponding path program 1 times [2020-10-14 22:23:48,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:48,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8185989] [2020-10-14 22:23:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:48,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:48,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 22:23:48,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 22:23:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:48,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:23:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 22:23:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:23:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:23:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:48,977 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 22:23:48,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8185989] [2020-10-14 22:23:48,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:23:48,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:23:48,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558227963] [2020-10-14 22:23:48,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:23:48,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:23:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:23:49,004 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:23:56,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:23:56,999 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:23:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:23:57,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 22:23:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:23:57,027 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:23:57,028 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:23:57,040 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 22:23:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:23:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:23:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:23:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:23:57,155 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 26 [2020-10-14 22:23:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:23:57,155 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:23:57,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:23:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:23:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 22:23:57,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:23:57,165 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:23:57,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:23:57,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:23:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:23:57,166 INFO L82 PathProgramCache]: Analyzing trace with hash -255135052, now seen corresponding path program 1 times [2020-10-14 22:23:57,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:23:57,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655971666] [2020-10-14 22:23:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:23:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:58,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:23:58,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:23:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 22:23:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:58,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:23:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:23:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 22:23:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:23:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:58,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:23:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:23:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:23:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:58,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:23:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:23:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:23:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:23:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:23:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:23:58,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:23:58,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:23:58,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:23:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 22:23:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:23:58,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:23:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:23:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:23:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:23:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:23:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:23:58,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655971666] [2020-10-14 22:23:58,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:23:58,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:23:58,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131679227] [2020-10-14 22:23:58,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:23:58,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:23:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:23:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:23:58,660 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 22:24:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:12,510 INFO L93 Difference]: Finished difference Result 1986 states and 3056 transitions. [2020-10-14 22:24:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 22:24:12,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 22:24:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:12,518 INFO L225 Difference]: With dead ends: 1986 [2020-10-14 22:24:12,518 INFO L226 Difference]: Without dead ends: 1001 [2020-10-14 22:24:12,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-10-14 22:24:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 995. [2020-10-14 22:24:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-10-14 22:24:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1430 transitions. [2020-10-14 22:24:12,556 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1430 transitions. Word has length 97 [2020-10-14 22:24:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:12,557 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1430 transitions. [2020-10-14 22:24:12,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:24:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1430 transitions. [2020-10-14 22:24:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 22:24:12,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:12,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:12,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:24:12,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash -414121280, now seen corresponding path program 1 times [2020-10-14 22:24:12,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:12,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854899378] [2020-10-14 22:24:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:24:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 22:24:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:12,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:24:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 22:24:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:12,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:12,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:12,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:24:12,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:12,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:24:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:24:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:24:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:24:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:13,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:24:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:13,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854899378] [2020-10-14 22:24:13,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:13,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:24:13,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790186732] [2020-10-14 22:24:13,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:24:13,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:13,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:24:13,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:24:13,063 INFO L87 Difference]: Start difference. First operand 995 states and 1430 transitions. Second operand 5 states. [2020-10-14 22:24:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:26,556 INFO L93 Difference]: Finished difference Result 2013 states and 3238 transitions. [2020-10-14 22:24:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:24:26,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-14 22:24:26,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:26,566 INFO L225 Difference]: With dead ends: 2013 [2020-10-14 22:24:26,566 INFO L226 Difference]: Without dead ends: 1457 [2020-10-14 22:24:26,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:24:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-10-14 22:24:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1450. [2020-10-14 22:24:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-14 22:24:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2016 transitions. [2020-10-14 22:24:26,610 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2016 transitions. Word has length 100 [2020-10-14 22:24:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:26,611 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2016 transitions. [2020-10-14 22:24:26,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:24:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2016 transitions. [2020-10-14 22:24:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 22:24:26,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:26,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:26,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:24:26,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1156026559, now seen corresponding path program 1 times [2020-10-14 22:24:26,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:26,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749109373] [2020-10-14 22:24:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:24:28,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-10-14 22:24:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:28,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:24:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:28,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:28,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:28,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:24:28,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:28,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:24:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 22:24:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:24:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:29,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749109373] [2020-10-14 22:24:29,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:24:29,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:24:29,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898412536] [2020-10-14 22:24:29,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:24:29,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:24:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:29,310 INFO L87 Difference]: Start difference. First operand 1450 states and 2016 transitions. Second operand 7 states. [2020-10-14 22:24:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:44,723 INFO L93 Difference]: Finished difference Result 2965 states and 4471 transitions. [2020-10-14 22:24:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:24:44,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 22:24:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:44,737 INFO L225 Difference]: With dead ends: 2965 [2020-10-14 22:24:44,737 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 22:24:44,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:24:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 22:24:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1911. [2020-10-14 22:24:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1911 states. [2020-10-14 22:24:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2547 transitions. [2020-10-14 22:24:44,807 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2547 transitions. Word has length 135 [2020-10-14 22:24:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:44,808 INFO L479 AbstractCegarLoop]: Abstraction has 1911 states and 2547 transitions. [2020-10-14 22:24:44,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:24:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2547 transitions. [2020-10-14 22:24:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 22:24:44,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:44,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:44,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:24:44,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1149383957, now seen corresponding path program 1 times [2020-10-14 22:24:44,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:44,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547846965] [2020-10-14 22:24:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:46,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 22:24:46,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-14 22:24:46,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:46,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:24:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:24:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:24:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:46,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:46,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:46,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:24:46,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 22:24:46,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:46,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:24:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:24:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:46,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547846965] [2020-10-14 22:24:46,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:24:46,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:24:46,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328597335] [2020-10-14 22:24:46,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:24:46,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:46,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:24:46,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:46,545 INFO L87 Difference]: Start difference. First operand 1911 states and 2547 transitions. Second operand 7 states. [2020-10-14 22:25:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:05,017 INFO L93 Difference]: Finished difference Result 4892 states and 6831 transitions. [2020-10-14 22:25:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:25:05,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-14 22:25:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:05,037 INFO L225 Difference]: With dead ends: 4892 [2020-10-14 22:25:05,037 INFO L226 Difference]: Without dead ends: 2945 [2020-10-14 22:25:05,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:25:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-10-14 22:25:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2396. [2020-10-14 22:25:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2020-10-14 22:25:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2892 transitions. [2020-10-14 22:25:05,134 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2892 transitions. Word has length 141 [2020-10-14 22:25:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:05,135 INFO L479 AbstractCegarLoop]: Abstraction has 2396 states and 2892 transitions. [2020-10-14 22:25:05,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:25:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2892 transitions. [2020-10-14 22:25:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 22:25:05,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:05,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:05,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:25:05,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -594411355, now seen corresponding path program 1 times [2020-10-14 22:25:05,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:05,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294620738] [2020-10-14 22:25:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:05,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 22:25:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-10-14 22:25:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:06,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:06,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:25:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:06,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:06,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:25:06,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:06,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:06,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:06,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:25:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:25:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:06,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:25:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:06,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294620738] [2020-10-14 22:25:06,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:06,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:25:06,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596435057] [2020-10-14 22:25:06,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:25:06,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:25:06,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:25:06,883 INFO L87 Difference]: Start difference. First operand 2396 states and 2892 transitions. Second operand 7 states. [2020-10-14 22:25:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:20,834 INFO L93 Difference]: Finished difference Result 6193 states and 7746 transitions. [2020-10-14 22:25:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:25:20,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-10-14 22:25:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:20,856 INFO L225 Difference]: With dead ends: 6193 [2020-10-14 22:25:20,856 INFO L226 Difference]: Without dead ends: 3803 [2020-10-14 22:25:20,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:25:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-10-14 22:25:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3769. [2020-10-14 22:25:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3769 states. [2020-10-14 22:25:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 4539 transitions. [2020-10-14 22:25:20,975 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 4539 transitions. Word has length 186 [2020-10-14 22:25:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:20,976 INFO L479 AbstractCegarLoop]: Abstraction has 3769 states and 4539 transitions. [2020-10-14 22:25:20,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:25:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 4539 transitions. [2020-10-14 22:25:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 22:25:20,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:20,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:25:20,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:25:20,979 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 540820705, now seen corresponding path program 1 times [2020-10-14 22:25:20,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:20,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797851020] [2020-10-14 22:25:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:25:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-10-14 22:25:24,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:25:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:25:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:24,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:24,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:25:24,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:24,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:24,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:25:24,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:24,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:25:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:25:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:24,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:25,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:25:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 22:25:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:25,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:25,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797851020] [2020-10-14 22:25:25,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:25,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:25:25,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885458213] [2020-10-14 22:25:25,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:25:25,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:25,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:25:25,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:25:25,211 INFO L87 Difference]: Start difference. First operand 3769 states and 4539 transitions. Second operand 10 states. [2020-10-14 22:25:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:51,047 INFO L93 Difference]: Finished difference Result 13263 states and 17245 transitions. [2020-10-14 22:25:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:25:51,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-10-14 22:25:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:51,107 INFO L225 Difference]: With dead ends: 13263 [2020-10-14 22:25:51,107 INFO L226 Difference]: Without dead ends: 9498 [2020-10-14 22:25:51,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:25:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9498 states. [2020-10-14 22:25:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9498 to 9318. [2020-10-14 22:25:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9318 states. [2020-10-14 22:25:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 11321 transitions. [2020-10-14 22:25:51,444 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 11321 transitions. Word has length 188 [2020-10-14 22:25:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:51,445 INFO L479 AbstractCegarLoop]: Abstraction has 9318 states and 11321 transitions. [2020-10-14 22:25:51,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:25:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 11321 transitions. [2020-10-14 22:25:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 22:25:51,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:51,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:25:51,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:25:51,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:51,449 INFO L82 PathProgramCache]: Analyzing trace with hash -656465652, now seen corresponding path program 1 times [2020-10-14 22:25:51,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:51,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234205677] [2020-10-14 22:25:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:56,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:25:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 22:25:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:56,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:25:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:25:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:25:56,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:56,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:56,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:56,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 22:25:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:56,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:25:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:57,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:25:57,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 22:25:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:25:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:25:57,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234205677] [2020-10-14 22:25:57,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:57,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:25:57,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613884695] [2020-10-14 22:25:57,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:25:57,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:57,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:25:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:25:57,343 INFO L87 Difference]: Start difference. First operand 9318 states and 11321 transitions. Second operand 5 states. [2020-10-14 22:26:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:14,311 INFO L93 Difference]: Finished difference Result 18203 states and 22211 transitions. [2020-10-14 22:26:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:14,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 22:26:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:14,355 INFO L225 Difference]: With dead ends: 18203 [2020-10-14 22:26:14,355 INFO L226 Difference]: Without dead ends: 9324 [2020-10-14 22:26:14,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:26:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2020-10-14 22:26:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 9318. [2020-10-14 22:26:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9318 states. [2020-10-14 22:26:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 11276 transitions. [2020-10-14 22:26:14,636 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 11276 transitions. Word has length 199 [2020-10-14 22:26:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:14,637 INFO L479 AbstractCegarLoop]: Abstraction has 9318 states and 11276 transitions. [2020-10-14 22:26:14,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:26:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 11276 transitions. [2020-10-14 22:26:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 22:26:14,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:14,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:26:14,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:26:14,646 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1109823631, now seen corresponding path program 1 times [2020-10-14 22:26:14,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:14,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941759530] [2020-10-14 22:26:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:15,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:15,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 22:26:15,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-14 22:26:15,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:15,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:26:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:16,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:26:16,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:16,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:16,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:26:16,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:16,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:16,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:16,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:16,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:26:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:16,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:26:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:26:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:16,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:26:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:26:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:16,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:26:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:26:16,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941759530] [2020-10-14 22:26:16,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:16,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:16,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72618328] [2020-10-14 22:26:16,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:26:16,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:16,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:26:16,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:16,605 INFO L87 Difference]: Start difference. First operand 9318 states and 11276 transitions. Second operand 7 states. [2020-10-14 22:26:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:42,259 INFO L93 Difference]: Finished difference Result 22497 states and 28564 transitions. [2020-10-14 22:26:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:26:42,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 22:26:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:42,328 INFO L225 Difference]: With dead ends: 22497 [2020-10-14 22:26:42,328 INFO L226 Difference]: Without dead ends: 13618 [2020-10-14 22:26:42,356 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 22:26:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13618 states. [2020-10-14 22:26:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13618 to 12116. [2020-10-14 22:26:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2020-10-14 22:26:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 15437 transitions. [2020-10-14 22:26:42,726 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 15437 transitions. Word has length 270 [2020-10-14 22:26:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:42,727 INFO L479 AbstractCegarLoop]: Abstraction has 12116 states and 15437 transitions. [2020-10-14 22:26:42,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:26:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 15437 transitions. [2020-10-14 22:26:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 22:26:42,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:42,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:26:42,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:26:42,734 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1211003881, now seen corresponding path program 1 times [2020-10-14 22:26:42,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:42,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307484452] [2020-10-14 22:26:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:42,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:47,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 22:26:47,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:26:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 22:26:47,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:47,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:26:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:26:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:48,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:26:48,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:48,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 22:26:48,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:26:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:48,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:48,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:26:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:48,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:26:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:26:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:49,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:49,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:26:49,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 22:26:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:49,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:26:49,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 138 proven. 80 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:26:49,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307484452] [2020-10-14 22:26:49,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:49,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:26:49,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043157288] [2020-10-14 22:26:49,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:26:49,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:26:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:26:49,373 INFO L87 Difference]: Start difference. First operand 12116 states and 15437 transitions. Second operand 10 states. [2020-10-14 22:26:49,610 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-14 22:27:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:24,209 INFO L93 Difference]: Finished difference Result 30833 states and 42914 transitions. [2020-10-14 22:27:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:27:24,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-10-14 22:27:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:24,368 INFO L225 Difference]: With dead ends: 30833 [2020-10-14 22:27:24,368 INFO L226 Difference]: Without dead ends: 19156 [2020-10-14 22:27:24,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:27:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19156 states. [2020-10-14 22:27:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19156 to 14784. [2020-10-14 22:27:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14784 states. [2020-10-14 22:27:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 18517 transitions. [2020-10-14 22:27:25,126 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 18517 transitions. Word has length 274 [2020-10-14 22:27:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:25,127 INFO L479 AbstractCegarLoop]: Abstraction has 14784 states and 18517 transitions. [2020-10-14 22:27:25,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:27:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 18517 transitions. [2020-10-14 22:27:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 22:27:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:25,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:27:25,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:27:25,136 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1991324679, now seen corresponding path program 1 times [2020-10-14 22:27:25,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:25,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694797160] [2020-10-14 22:27:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking...