/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/Problem05_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:39:15,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:39:15,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:39:15,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:39:15,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:39:15,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:39:15,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:39:15,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:39:15,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:39:15,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:39:15,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:39:15,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:39:15,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:39:15,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:39:15,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:39:15,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:39:15,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:39:15,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:39:15,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:39:15,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:39:15,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:39:15,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:39:15,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:39:15,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:39:15,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:39:15,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:39:15,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:39:15,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:39:15,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:39:15,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:39:15,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:39:15,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:39:15,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:39:15,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:39:15,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:39:15,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:39:15,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:39:15,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:39:15,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:39:15,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:39:15,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:39:15,135 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 19:39:15,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:39:15,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:39:15,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:39:15,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:39:15,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:39:15,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:39:15,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:39:15,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:39:15,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:39:15,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:39:15,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:39:15,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:39:15,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:39:15,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:39:15,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:39:15,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:39:15,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:39:15,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:39:15,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:39:15,174 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 19:39:15,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:39:15,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:39:15,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:39:15,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:39:15,537 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:39:15,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label22.c [2020-10-14 19:39:15,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/102a3e373/d3662688d68d48febef04f6a673e98d3/FLAG082756d08 [2020-10-14 19:39:16,597 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:39:16,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label22.c [2020-10-14 19:39:16,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/102a3e373/d3662688d68d48febef04f6a673e98d3/FLAG082756d08 [2020-10-14 19:39:16,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/102a3e373/d3662688d68d48febef04f6a673e98d3 [2020-10-14 19:39:17,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:39:17,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:39:17,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:39:17,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:39:17,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:39:17,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:39:16" (1/1) ... [2020-10-14 19:39:17,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:17, skipping insertion in model container [2020-10-14 19:39:17,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:39:16" (1/1) ... [2020-10-14 19:39:17,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:39:17,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:39:19,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:39:19,847 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:39:20,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:39:21,035 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:39:21,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21 WrapperNode [2020-10-14 19:39:21,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:39:21,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:39:21,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:39:21,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:39:21,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (1/1) ... [2020-10-14 19:39:21,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:39:21,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:39:21,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:39:21,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:39:21,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (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 19:39:21,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:39:21,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:39:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:39:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:39:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:39:21,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:39:21,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:39:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:39:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:39:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:39:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:39:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:39:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:39:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:39:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:39:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:39:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:39:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:39:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:39:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:39:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:39:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:39:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:39:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:39:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:39:31,166 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:39:31,167 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:39:31,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:39:31 BoogieIcfgContainer [2020-10-14 19:39:31,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:39:31,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:39:31,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:39:31,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:39:31,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:39:16" (1/3) ... [2020-10-14 19:39:31,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c266372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:39:31, skipping insertion in model container [2020-10-14 19:39:31,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:39:21" (2/3) ... [2020-10-14 19:39:31,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c266372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:39:31, skipping insertion in model container [2020-10-14 19:39:31,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:39:31" (3/3) ... [2020-10-14 19:39:31,198 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label22.c [2020-10-14 19:39:31,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:39:31,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:39:31,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:39:31,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:39:31,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:39:31,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:39:31,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:39:31,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:39:31,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:39:31,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:39:31,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:39:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:39:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1681 [2020-10-14 19:39:31,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:39:31,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:31,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:39:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:39:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1586826519, now seen corresponding path program 1 times [2020-10-14 19:39:31,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:39:31,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369216001] [2020-10-14 19:39:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:39:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:39:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:39:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:39:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1702 [2020-10-14 19:39:37,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:39:37,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5185 [2020-10-14 19:39:37,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:39:37,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:39:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:39:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:39:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1696 [2020-10-14 19:39:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:39:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:39:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:39:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:39:39,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:39:39,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:39:39,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:39:39,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:39:39,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:39:39,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:39:39,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:39:39,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:39:39,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:39:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:39:41,465 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 19:39:41,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369216001] [2020-10-14 19:39:41,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:39:41,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:39:41,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528577090] [2020-10-14 19:39:41,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:39:41,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:39:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:39:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:39:41,490 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 19:39:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:39:59,930 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-14 19:39:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:39:59,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1680 [2020-10-14 19:39:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:39:59,990 INFO L225 Difference]: With dead ends: 6311 [2020-10-14 19:39:59,991 INFO L226 Difference]: Without dead ends: 4025 [2020-10-14 19:40:00,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 19:40:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-14 19:40:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-14 19:40:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-14 19:40:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-14 19:40:00,263 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1680 [2020-10-14 19:40:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:40:00,268 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-14 19:40:00,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:40:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-14 19:40:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2020-10-14 19:40:00,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:40:00,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:00,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:40:00,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:40:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:40:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1864606110, now seen corresponding path program 1 times [2020-10-14 19:40:00,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:40:00,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425799138] [2020-10-14 19:40:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:40:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:05,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1713 [2020-10-14 19:40:05,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:40:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:40:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:05,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:40:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:40:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1693 [2020-10-14 19:40:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:40:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:40:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:07,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:07,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:40:07,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:40:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:40:07,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:07,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:40:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:40:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:40:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 19:40:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:40:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:40:07,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:40:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:40:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:07,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:40:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:40:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:40:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:40:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:40:09,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425799138] [2020-10-14 19:40:09,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:40:09,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:40:09,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348923234] [2020-10-14 19:40:09,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:40:09,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:40:09,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:40:09,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:40:09,517 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 5 states. [2020-10-14 19:40:29,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:40:29,649 INFO L93 Difference]: Finished difference Result 11675 states and 18972 transitions. [2020-10-14 19:40:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:40:29,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1689 [2020-10-14 19:40:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:40:29,695 INFO L225 Difference]: With dead ends: 11675 [2020-10-14 19:40:29,696 INFO L226 Difference]: Without dead ends: 7685 [2020-10-14 19:40:29,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:40:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7685 states. [2020-10-14 19:40:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7685 to 7590. [2020-10-14 19:40:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7590 states. [2020-10-14 19:40:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 11844 transitions. [2020-10-14 19:40:29,939 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 11844 transitions. Word has length 1689 [2020-10-14 19:40:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:40:29,940 INFO L479 AbstractCegarLoop]: Abstraction has 7590 states and 11844 transitions. [2020-10-14 19:40:29,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:40:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 11844 transitions. [2020-10-14 19:40:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-14 19:40:30,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:40:30,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:30,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:40:30,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:40:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:40:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash 641061646, now seen corresponding path program 1 times [2020-10-14 19:40:30,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:40:30,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936264844] [2020-10-14 19:40:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:40:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-14 19:40:35,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:40:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-14 19:40:35,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:35,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:40:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:40:35,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:40:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:40:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:40:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:35,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:35,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:40:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:40:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:40:35,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:40:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:40:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:40:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:40:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:40:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:35,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:40:35,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:40:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:40:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:35,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:40:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:40:35,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:40:35,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:40:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:40:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:40:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:40:35,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:40:35,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:40:35,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:40:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:40:35,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:40:35,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:40:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:40:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:40:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:40:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:40:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:40:36,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936264844] [2020-10-14 19:40:36,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:40:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:40:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621050304] [2020-10-14 19:40:36,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:40:36,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:40:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:40:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:40:36,809 INFO L87 Difference]: Start difference. First operand 7590 states and 11844 transitions. Second operand 7 states. [2020-10-14 19:41:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:41:00,754 INFO L93 Difference]: Finished difference Result 22307 states and 35398 transitions. [2020-10-14 19:41:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:41:00,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712 [2020-10-14 19:41:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:41:00,836 INFO L225 Difference]: With dead ends: 22307 [2020-10-14 19:41:00,836 INFO L226 Difference]: Without dead ends: 14723 [2020-10-14 19:41:00,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 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 19:41:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14723 states. [2020-10-14 19:41:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14723 to 14705. [2020-10-14 19:41:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14705 states. [2020-10-14 19:41:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 22204 transitions. [2020-10-14 19:41:01,229 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 22204 transitions. Word has length 1712 [2020-10-14 19:41:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:41:01,230 INFO L479 AbstractCegarLoop]: Abstraction has 14705 states and 22204 transitions. [2020-10-14 19:41:01,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:41:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 22204 transitions. [2020-10-14 19:41:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-14 19:41:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:41:01,304 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:01,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:41:01,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:41:01,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:41:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash -995702059, now seen corresponding path program 1 times [2020-10-14 19:41:01,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:41:01,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857403815] [2020-10-14 19:41:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:41:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:06,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-14 19:41:06,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:41:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 19:41:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:06,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 19:41:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:41:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-14 19:41:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:41:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:41:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:10,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:41:10,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:41:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:41:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:10,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:41:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:41:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:41:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:41:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:41:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:41:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:41:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:41:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:41:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:41:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:41:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:41:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:41:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:41:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:41:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:41:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:41:10,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:41:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:41:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:41:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:41:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:41:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:41:25,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857403815] [2020-10-14 19:41:25,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:41:25,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 19:41:25,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105841237] [2020-10-14 19:41:25,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 19:41:25,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:41:25,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 19:41:25,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-14 19:41:25,765 INFO L87 Difference]: Start difference. First operand 14705 states and 22204 transitions. Second operand 25 states. [2020-10-14 19:41:26,538 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-14 19:41:26,785 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-14 19:41:31,660 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-14 19:41:32,670 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-14 19:41:34,543 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-14 19:41:34,814 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 19:41:42,827 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-14 19:41:43,075 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 19:41:50,595 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-14 19:41:50,834 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 19:41:53,865 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-14 19:41:58,660 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 19:41:58,890 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-14 19:42:02,121 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-14 19:42:06,543 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-14 19:42:07,287 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-14 19:42:07,499 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-14 19:42:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:42:21,895 INFO L93 Difference]: Finished difference Result 34195 states and 52640 transitions. [2020-10-14 19:42:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 19:42:21,897 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1717 [2020-10-14 19:42:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:42:21,960 INFO L225 Difference]: With dead ends: 34195 [2020-10-14 19:42:21,961 INFO L226 Difference]: Without dead ends: 19496 [2020-10-14 19:42:21,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 19:42:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19496 states. [2020-10-14 19:42:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19496 to 19492. [2020-10-14 19:42:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19492 states. [2020-10-14 19:42:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19492 states to 19492 states and 27505 transitions. [2020-10-14 19:42:22,426 INFO L78 Accepts]: Start accepts. Automaton has 19492 states and 27505 transitions. Word has length 1717 [2020-10-14 19:42:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:42:22,428 INFO L479 AbstractCegarLoop]: Abstraction has 19492 states and 27505 transitions. [2020-10-14 19:42:22,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 19:42:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 19492 states and 27505 transitions. [2020-10-14 19:42:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-14 19:42:22,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:42:22,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:22,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:42:22,505 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:42:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:42:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1087570883, now seen corresponding path program 1 times [2020-10-14 19:42:22,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:42:22,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833237557] [2020-10-14 19:42:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:42:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:22,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:42:27,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1694 [2020-10-14 19:42:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:42:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:42:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:28,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:28,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:42:28,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:42:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:42:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:42:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:42:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:42:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:42:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 19:42:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:42:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:42:30,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833237557] [2020-10-14 19:42:30,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:42:30,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:42:30,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620394688] [2020-10-14 19:42:30,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:42:30,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:42:30,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:42:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:42:30,595 INFO L87 Difference]: Start difference. First operand 19492 states and 27505 transitions. Second operand 6 states. [2020-10-14 19:43:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:43:02,960 INFO L93 Difference]: Finished difference Result 47913 states and 69197 transitions. [2020-10-14 19:43:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:43:02,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1718 [2020-10-14 19:43:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:43:03,077 INFO L225 Difference]: With dead ends: 47913 [2020-10-14 19:43:03,077 INFO L226 Difference]: Without dead ends: 28427 [2020-10-14 19:43:03,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:43:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28427 states. [2020-10-14 19:43:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28427 to 28302. [2020-10-14 19:43:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28302 states. [2020-10-14 19:43:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28302 states to 28302 states and 38651 transitions. [2020-10-14 19:43:03,638 INFO L78 Accepts]: Start accepts. Automaton has 28302 states and 38651 transitions. Word has length 1718 [2020-10-14 19:43:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:43:03,640 INFO L479 AbstractCegarLoop]: Abstraction has 28302 states and 38651 transitions. [2020-10-14 19:43:03,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:43:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 28302 states and 38651 transitions. [2020-10-14 19:43:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2020-10-14 19:43:03,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:43:03,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:03,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:43:03,714 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:43:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:43:03,715 INFO L82 PathProgramCache]: Analyzing trace with hash 986069061, now seen corresponding path program 1 times [2020-10-14 19:43:03,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:43:03,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315710315] [2020-10-14 19:43:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:43:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:43:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:43:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking...