/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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:43,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:43,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:43,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:43,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:43,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:43,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:43,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:43,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:43,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:43,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:43,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:43,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:43,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:43,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:43,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:43,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:43,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:43,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:43,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:43,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:43,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:43,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:43,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:43,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:43,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:43,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:43,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:43,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:43,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:43,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:43,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:43,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:43,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:43,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:43,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:43,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:43,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:43,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:43,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:43,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:43,436 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 22:27:43,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:43,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:43,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:43,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:43,464 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:43,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:43,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:43,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:43,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:43,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:43,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:43,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:43,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:43,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:43,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:43,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:43,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:43,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:43,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:43,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:43,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:43,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:43,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:43,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:43,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:43,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:43,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:43,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:43,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:43,469 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 22:27:43,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:43,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:43,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:43,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:43,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:43,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-14 22:27:43,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c943159f2/81594f0d11494b91acd9e9310be811a1/FLAGbf83f2b72 [2020-10-14 22:27:44,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:44,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-14 22:27:44,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c943159f2/81594f0d11494b91acd9e9310be811a1/FLAGbf83f2b72 [2020-10-14 22:27:44,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c943159f2/81594f0d11494b91acd9e9310be811a1 [2020-10-14 22:27:44,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:44,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:44,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:44,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:44,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:44,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:44" (1/1) ... [2020-10-14 22:27:44,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7636aefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:44, skipping insertion in model container [2020-10-14 22:27:44,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:44" (1/1) ... [2020-10-14 22:27:44,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:44,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:46,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:46,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:46,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:46,710 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:46,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46 WrapperNode [2020-10-14 22:27:46,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:46,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:46,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:46,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:46,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (1/1) ... [2020-10-14 22:27:46,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:46,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:46,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:46,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:46,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (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 22:27:47,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:47,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:56,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:56,255 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:56,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:56 BoogieIcfgContainer [2020-10-14 22:27:56,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:56,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:56,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:56,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:56,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:44" (1/3) ... [2020-10-14 22:27:56,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32753529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:56, skipping insertion in model container [2020-10-14 22:27:56,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:46" (2/3) ... [2020-10-14 22:27:56,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32753529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:56, skipping insertion in model container [2020-10-14 22:27:56,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:56" (3/3) ... [2020-10-14 22:27:56,275 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label20.c [2020-10-14 22:27:56,288 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:56,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:56,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:56,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:56,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:56,352 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:56,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:56,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:56,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:56,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:56,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 22:27:56,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:56,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:56,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1354524993, now seen corresponding path program 1 times [2020-10-14 22:27:56,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:56,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740744706] [2020-10-14 22:27:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:57,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 22:27:57,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-14 22:27:57,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:57,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 22:27:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:57,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:57,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:27:57,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:57,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:57,344 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 22:27:57,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740744706] [2020-10-14 22:27:57,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:57,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:57,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379170910] [2020-10-14 22:27:57,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:57,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:57,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:57,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:57,380 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:28:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:10,028 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:28:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:10,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 22:28:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:10,058 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:28:10,059 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:28:10,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:28:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:28:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:28:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:28:10,247 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 32 [2020-10-14 22:28:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:10,250 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:28:10,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:28:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:28:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 22:28:10,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:10,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:10,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:28:10,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1522428140, now seen corresponding path program 1 times [2020-10-14 22:28:10,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:10,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498209839] [2020-10-14 22:28:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:28:11,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:28:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-14 22:28:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:28:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:11,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:28:11,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:11,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 22:28:11,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:28:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:28:12,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498209839] [2020-10-14 22:28:12,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:12,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:12,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875851680] [2020-10-14 22:28:12,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:28:12,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:12,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:28:12,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:28:12,098 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 6 states. [2020-10-14 22:28:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:22,327 INFO L93 Difference]: Finished difference Result 2459 states and 3671 transitions. [2020-10-14 22:28:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 22:28:22,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 22:28:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:22,338 INFO L225 Difference]: With dead ends: 2459 [2020-10-14 22:28:22,338 INFO L226 Difference]: Without dead ends: 1463 [2020-10-14 22:28:22,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-14 22:28:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2020-10-14 22:28:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-14 22:28:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2035 transitions. [2020-10-14 22:28:22,395 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2035 transitions. Word has length 103 [2020-10-14 22:28:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:22,396 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 2035 transitions. [2020-10-14 22:28:22,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:28:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2035 transitions. [2020-10-14 22:28:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 22:28:22,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:22,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:22,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:28:22,399 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1448831800, now seen corresponding path program 1 times [2020-10-14 22:28:22,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:22,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786936385] [2020-10-14 22:28:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:28:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 22:28:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:28:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:28:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:22,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:22,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:22,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:22,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:22,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:28:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:22,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:22,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:28:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:22,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786936385] [2020-10-14 22:28:22,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:22,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:22,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005342501] [2020-10-14 22:28:22,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:28:22,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:22,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:28:22,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:22,923 INFO L87 Difference]: Start difference. First operand 1463 states and 2035 transitions. Second operand 5 states. [2020-10-14 22:28:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:35,405 INFO L93 Difference]: Finished difference Result 2943 states and 4451 transitions. [2020-10-14 22:28:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:35,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 22:28:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:35,420 INFO L225 Difference]: With dead ends: 2943 [2020-10-14 22:28:35,420 INFO L226 Difference]: Without dead ends: 1919 [2020-10-14 22:28:35,423 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 22:28:35,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2020-10-14 22:28:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2020-10-14 22:28:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-14 22:28:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2629 transitions. [2020-10-14 22:28:35,473 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2629 transitions. Word has length 106 [2020-10-14 22:28:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:35,474 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2629 transitions. [2020-10-14 22:28:35,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:28:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2629 transitions. [2020-10-14 22:28:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 22:28:35,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:35,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:28:35,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:35,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1716346193, now seen corresponding path program 1 times [2020-10-14 22:28:35,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:35,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406510158] [2020-10-14 22:28:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 22:28:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 22:28:40,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:28:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 22:28:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:28:40,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:28:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:40,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 22:28:40,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:40,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:28:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:41,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 22:28:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:41,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:28:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 22:28:41,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:41,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:28:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:28:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:28:41,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406510158] [2020-10-14 22:28:41,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:41,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:41,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315592050] [2020-10-14 22:28:41,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:41,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:41,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:41,310 INFO L87 Difference]: Start difference. First operand 1917 states and 2629 transitions. Second operand 7 states. [2020-10-14 22:28:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:57,643 INFO L93 Difference]: Finished difference Result 4858 states and 7015 transitions. [2020-10-14 22:28:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:28:57,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-14 22:28:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:57,670 INFO L225 Difference]: With dead ends: 4858 [2020-10-14 22:28:57,670 INFO L226 Difference]: Without dead ends: 2915 [2020-10-14 22:28:57,678 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 22:28:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-10-14 22:28:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2399. [2020-10-14 22:28:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-14 22:28:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 2948 transitions. [2020-10-14 22:28:57,787 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 2948 transitions. Word has length 179 [2020-10-14 22:28:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:57,789 INFO L479 AbstractCegarLoop]: Abstraction has 2399 states and 2948 transitions. [2020-10-14 22:28:57,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 2948 transitions. [2020-10-14 22:28:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 22:28:57,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:57,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:28:57,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:28:57,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1343449667, now seen corresponding path program 1 times [2020-10-14 22:28:57,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:57,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847483955] [2020-10-14 22:28:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 22:28:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-14 22:28:58,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:58,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:28:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:58,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:58,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:58,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:28:58,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:59,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:59,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:59,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:28:59,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:59,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:59,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:28:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 22:28:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:59,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:28:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:28:59,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847483955] [2020-10-14 22:28:59,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:59,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:59,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818268126] [2020-10-14 22:28:59,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:59,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:59,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:59,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:59,321 INFO L87 Difference]: Start difference. First operand 2399 states and 2948 transitions. Second operand 7 states. [2020-10-14 22:29:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:12,221 INFO L93 Difference]: Finished difference Result 6181 states and 7893 transitions. [2020-10-14 22:29:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:29:12,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 22:29:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:12,247 INFO L225 Difference]: With dead ends: 6181 [2020-10-14 22:29:12,247 INFO L226 Difference]: Without dead ends: 3788 [2020-10-14 22:29:12,256 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 22:29:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-10-14 22:29:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3771. [2020-10-14 22:29:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-14 22:29:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4652 transitions. [2020-10-14 22:29:12,379 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4652 transitions. Word has length 192 [2020-10-14 22:29:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:12,380 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 4652 transitions. [2020-10-14 22:29:12,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4652 transitions. [2020-10-14 22:29:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 22:29:12,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:12,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:29:12,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:29:12,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1944797959, now seen corresponding path program 1 times [2020-10-14 22:29:12,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:12,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221915795] [2020-10-14 22:29:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 22:29:17,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4825 [2020-10-14 22:29:17,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:29:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:29:17,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:17,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:29:17,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:17,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:29:17,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:17,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:29:18,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:18,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:29:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 119 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:29:18,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221915795] [2020-10-14 22:29:18,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:18,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:29:18,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571158228] [2020-10-14 22:29:18,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:29:18,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:18,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:29:18,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:29:18,391 INFO L87 Difference]: Start difference. First operand 3771 states and 4652 transitions. Second operand 10 states. [2020-10-14 22:29:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:39,247 INFO L93 Difference]: Finished difference Result 8786 states and 11188 transitions. [2020-10-14 22:29:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 22:29:39,250 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-10-14 22:29:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:39,282 INFO L225 Difference]: With dead ends: 8786 [2020-10-14 22:29:39,282 INFO L226 Difference]: Without dead ends: 5021 [2020-10-14 22:29:39,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-10-14 22:29:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2020-10-14 22:29:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 4796. [2020-10-14 22:29:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4796 states. [2020-10-14 22:29:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5794 transitions. [2020-10-14 22:29:39,467 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5794 transitions. Word has length 194 [2020-10-14 22:29:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:39,468 INFO L479 AbstractCegarLoop]: Abstraction has 4796 states and 5794 transitions. [2020-10-14 22:29:39,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:29:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5794 transitions. [2020-10-14 22:29:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 22:29:39,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:39,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:29:39,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:29:39,472 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash -707533596, now seen corresponding path program 1 times [2020-10-14 22:29:39,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:39,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824973933] [2020-10-14 22:29:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 22:29:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:29:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 22:29:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:44,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:29:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 22:29:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:44,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:44,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:44,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:29:44,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:44,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:44,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:44,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:29:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:44,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:45,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:29:45,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 22:29:45,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:45,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:29:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:29:45,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824973933] [2020-10-14 22:29:45,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:45,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:29:45,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831821337] [2020-10-14 22:29:45,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:29:45,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:45,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:29:45,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:29:45,265 INFO L87 Difference]: Start difference. First operand 4796 states and 5794 transitions. Second operand 5 states. [2020-10-14 22:29:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:58,626 INFO L93 Difference]: Finished difference Result 9158 states and 11316 transitions. [2020-10-14 22:29:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:29:58,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 22:29:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:58,648 INFO L225 Difference]: With dead ends: 9158 [2020-10-14 22:29:58,648 INFO L226 Difference]: Without dead ends: 5248 [2020-10-14 22:29:58,657 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 22:29:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2020-10-14 22:29:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 5234. [2020-10-14 22:29:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2020-10-14 22:29:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6388 transitions. [2020-10-14 22:29:58,769 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6388 transitions. Word has length 205 [2020-10-14 22:29:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:58,769 INFO L479 AbstractCegarLoop]: Abstraction has 5234 states and 6388 transitions. [2020-10-14 22:29:58,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:29:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6388 transitions. [2020-10-14 22:29:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 22:29:58,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:58,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:58,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:29:58,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2038247146, now seen corresponding path program 1 times [2020-10-14 22:29:58,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:58,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030819147] [2020-10-14 22:29:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:03,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:03,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 22:30:03,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:03,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4914 [2020-10-14 22:30:03,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:03,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:03,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:30:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 22:30:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:03,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:30:03,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:03,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:03,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 22:30:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:04,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:30:04,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:30:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:30:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:04,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 22:30:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:04,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:04,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:30:04,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:30:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:04,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:30:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 80 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 22:30:04,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030819147] [2020-10-14 22:30:04,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:04,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:30:04,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064108658] [2020-10-14 22:30:04,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:30:04,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:04,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:30:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:30:04,484 INFO L87 Difference]: Start difference. First operand 5234 states and 6388 transitions. Second operand 9 states. [2020-10-14 22:30:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:22,859 INFO L93 Difference]: Finished difference Result 13324 states and 17109 transitions. [2020-10-14 22:30:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:30:22,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2020-10-14 22:30:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:22,895 INFO L225 Difference]: With dead ends: 13324 [2020-10-14 22:30:22,896 INFO L226 Difference]: Without dead ends: 8082 [2020-10-14 22:30:22,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:30:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2020-10-14 22:30:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 7947. [2020-10-14 22:30:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7947 states. [2020-10-14 22:30:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 9403 transitions. [2020-10-14 22:30:23,130 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 9403 transitions. Word has length 272 [2020-10-14 22:30:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:23,130 INFO L479 AbstractCegarLoop]: Abstraction has 7947 states and 9403 transitions. [2020-10-14 22:30:23,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:30:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 9403 transitions. [2020-10-14 22:30:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 22:30:23,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:23,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:30:23,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:30:23,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash 267947007, now seen corresponding path program 1 times [2020-10-14 22:30:23,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:23,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441170485] [2020-10-14 22:30:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:24,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:26,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:26,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:30:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:26,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:26,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:26,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:30:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:26,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:26,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:26,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:30:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 163 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:30:26,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441170485] [2020-10-14 22:30:26,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:26,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:26,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221758735] [2020-10-14 22:30:26,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:26,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:26,856 INFO L87 Difference]: Start difference. First operand 7947 states and 9403 transitions. Second operand 7 states. [2020-10-14 22:30:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:43,295 INFO L93 Difference]: Finished difference Result 16024 states and 19109 transitions. [2020-10-14 22:30:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:30:43,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-14 22:30:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:43,336 INFO L225 Difference]: With dead ends: 16024 [2020-10-14 22:30:43,337 INFO L226 Difference]: Without dead ends: 8960 [2020-10-14 22:30:43,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:30:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8960 states. [2020-10-14 22:30:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8960 to 8842. [2020-10-14 22:30:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8842 states. [2020-10-14 22:30:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 10402 transitions. [2020-10-14 22:30:43,608 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 10402 transitions. Word has length 299 [2020-10-14 22:30:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:43,609 INFO L479 AbstractCegarLoop]: Abstraction has 8842 states and 10402 transitions. [2020-10-14 22:30:43,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:30:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 10402 transitions. [2020-10-14 22:30:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 22:30:43,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:43,618 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:43,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:30:43,618 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash -904422088, now seen corresponding path program 1 times [2020-10-14 22:30:43,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:43,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250445733] [2020-10-14 22:30:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-14 22:30:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 22:30:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:48,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:30:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:30:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:48,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:30:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:48,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:48,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:30:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:30:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:49,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:30:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 22:30:49,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:49,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:30:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:30:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:49,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:49,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:30:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 280 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:30:49,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250445733] [2020-10-14 22:30:49,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:49,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:30:49,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253541523] [2020-10-14 22:30:49,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:30:49,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:49,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:30:49,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:30:49,275 INFO L87 Difference]: Start difference. First operand 8842 states and 10402 transitions. Second operand 7 states. [2020-10-14 22:31:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:06,388 INFO L93 Difference]: Finished difference Result 19231 states and 23372 transitions. [2020-10-14 22:31:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:31:06,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-10-14 22:31:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:06,430 INFO L225 Difference]: With dead ends: 19231 [2020-10-14 22:31:06,431 INFO L226 Difference]: Without dead ends: 11272 [2020-10-14 22:31:06,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 22:31:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11272 states. [2020-10-14 22:31:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11272 to 11124. [2020-10-14 22:31:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11124 states. [2020-10-14 22:31:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 13383 transitions. [2020-10-14 22:31:06,730 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 13383 transitions. Word has length 378 [2020-10-14 22:31:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:06,731 INFO L479 AbstractCegarLoop]: Abstraction has 11124 states and 13383 transitions. [2020-10-14 22:31:06,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 13383 transitions. [2020-10-14 22:31:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-14 22:31:06,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:06,740 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:31:06,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:31:06,741 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash -75535465, now seen corresponding path program 1 times [2020-10-14 22:31:06,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:06,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598094132] [2020-10-14 22:31:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:08,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 22:31:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:31:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:31:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:12,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:31:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 22:31:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:31:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:31:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 22:31:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:31:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:31:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:31:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 22:31:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:12,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:31:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:31:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:31:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:13,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:13,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:31:13,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:31:13,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:13,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:31:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 110 proven. 448 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:31:13,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598094132] [2020-10-14 22:31:13,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:13,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:31:13,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645328943] [2020-10-14 22:31:13,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:31:13,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:13,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:31:13,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:31:13,407 INFO L87 Difference]: Start difference. First operand 11124 states and 13383 transitions. Second operand 11 states. [2020-10-14 22:31:14,345 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-14 22:31:22,432 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-14 22:31:27,186 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39