/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:34:20,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:34:20,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:34:20,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:34:20,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:34:20,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:34:20,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:34:20,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:34:20,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:34:20,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:34:20,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:34:20,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:34:20,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:34:20,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:34:20,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:34:20,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:34:20,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:34:20,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:34:20,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:34:20,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:34:20,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:34:20,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:34:20,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:34:20,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:34:20,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:34:20,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:34:20,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:34:20,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:34:20,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:34:20,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:34:20,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:34:20,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:34:20,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:34:20,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:34:20,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:34:20,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:34:20,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:34:20,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:34:20,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:34:20,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:34:20,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:34:20,261 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 19:34:20,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:34:20,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:34:20,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:34:20,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:34:20,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:34:20,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:34:20,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:34:20,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:34:20,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:34:20,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:34:20,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:34:20,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:34:20,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:34:20,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:34:20,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:34:20,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:34:20,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:34:20,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:34:20,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:34:20,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:34:20,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:34:20,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:34:20,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:34:20,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:34:20,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:34:20,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:34:20,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:34:20,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:34:20,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:34:20,290 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 19:34:20,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:34:20,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:34:20,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:34:20,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:34:20,641 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:34:20,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label02.c [2020-10-14 19:34:20,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5734996f1/d1b2032b068f4e70a97417bacf019f5e/FLAG53d13e678 [2020-10-14 19:34:21,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:34:21,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label02.c [2020-10-14 19:34:21,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5734996f1/d1b2032b068f4e70a97417bacf019f5e/FLAG53d13e678 [2020-10-14 19:34:22,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5734996f1/d1b2032b068f4e70a97417bacf019f5e [2020-10-14 19:34:22,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:34:22,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:34:22,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:34:22,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:34:22,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:34:22,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:34:22" (1/1) ... [2020-10-14 19:34:22,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450dbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:22, skipping insertion in model container [2020-10-14 19:34:22,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:34:22" (1/1) ... [2020-10-14 19:34:22,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:34:22,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:34:24,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:34:24,816 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:34:25,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:34:25,992 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:34:25,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25 WrapperNode [2020-10-14 19:34:25,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:34:25,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:34:25,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:34:25,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:34:26,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (1/1) ... [2020-10-14 19:34:26,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:34:26,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:34:26,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:34:26,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:34:26,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (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 19:34:26,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:34:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:34:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:34:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:34:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:34:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:34:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:34:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:34:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:34:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:34:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:34:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:34:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:34:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:34:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:34:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:34:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:34:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:34:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:34:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:34:34,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:34:34,604 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:34:34,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:34:34 BoogieIcfgContainer [2020-10-14 19:34:34,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:34:34,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:34:34,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:34:34,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:34:34,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:34:22" (1/3) ... [2020-10-14 19:34:34,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1e427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:34:34, skipping insertion in model container [2020-10-14 19:34:34,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:34:25" (2/3) ... [2020-10-14 19:34:34,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1e427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:34:34, skipping insertion in model container [2020-10-14 19:34:34,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:34:34" (3/3) ... [2020-10-14 19:34:34,630 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label02.c [2020-10-14 19:34:34,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:34:34,650 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:34:34,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:34:34,695 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:34:34,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:34:34,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:34:34,696 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:34:34,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:34:34,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:34:34,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:34:34,696 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:34:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:34:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2020-10-14 19:34:34,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:34:34,846 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, 1, 1, 1, 1] [2020-10-14 19:34:34,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:34:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:34:34,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1141407417, now seen corresponding path program 1 times [2020-10-14 19:34:34,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:34:34,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809767623] [2020-10-14 19:34:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:34:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:40,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1706 [2020-10-14 19:34:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 19:34:40,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:40,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:34:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:34:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1700 [2020-10-14 19:34:40,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:34:42,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:34:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:34:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:34:42,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:34:42,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:34:42,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:34:42,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:34:42,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:34:42,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:34:42,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:34:42,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:34:42,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:34:42,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:34:44,941 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 19:34:44,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809767623] [2020-10-14 19:34:44,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:34:44,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:34:44,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76609947] [2020-10-14 19:34:44,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:34:44,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:34:44,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:34:44,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:34:44,967 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 19:35:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:35:01,167 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-14 19:35:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:35:01,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1684 [2020-10-14 19:35:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:35:01,228 INFO L225 Difference]: With dead ends: 6311 [2020-10-14 19:35:01,228 INFO L226 Difference]: Without dead ends: 4025 [2020-10-14 19:35:01,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:35:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-14 19:35:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-14 19:35:01,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-14 19:35:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-14 19:35:01,495 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1684 [2020-10-14 19:35:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:35:01,500 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-14 19:35:01,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:35:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-14 19:35:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1694 [2020-10-14 19:35:01,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:01,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:01,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:35:01,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash 330353390, now seen corresponding path program 1 times [2020-10-14 19:35:01,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:01,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529686425] [2020-10-14 19:35:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1717 [2020-10-14 19:35:06,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:35:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-14 19:35:06,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:06,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:35:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:35:06,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1697 [2020-10-14 19:35:06,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:35:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:35:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:08,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:35:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:35:08,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:08,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:35:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:35:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 19:35:08,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:35:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:35:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:35:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:10,931 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 19:35:10,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529686425] [2020-10-14 19:35:10,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:35:10,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:35:10,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071125476] [2020-10-14 19:35:10,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:35:10,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:35:10,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:35:10,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:35:10,939 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 5 states. [2020-10-14 19:35:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:35:29,516 INFO L93 Difference]: Finished difference Result 11675 states and 18972 transitions. [2020-10-14 19:35:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:35:29,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1693 [2020-10-14 19:35:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:35:29,559 INFO L225 Difference]: With dead ends: 11675 [2020-10-14 19:35:29,559 INFO L226 Difference]: Without dead ends: 7685 [2020-10-14 19:35:29,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:35:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7685 states. [2020-10-14 19:35:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7685 to 7590. [2020-10-14 19:35:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7590 states. [2020-10-14 19:35:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 11844 transitions. [2020-10-14 19:35:29,813 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 11844 transitions. Word has length 1693 [2020-10-14 19:35:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:35:29,814 INFO L479 AbstractCegarLoop]: Abstraction has 7590 states and 11844 transitions. [2020-10-14 19:35:29,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:35:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 11844 transitions. [2020-10-14 19:35:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-14 19:35:29,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:29,964 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, 1, 1, 1, 1] [2020-10-14 19:35:29,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:35:29,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1435712418, now seen corresponding path program 1 times [2020-10-14 19:35:29,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:29,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872793863] [2020-10-14 19:35:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:35,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:35,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-14 19:35:35,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:35:35,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 19:35:35,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:35,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:35,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:35:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:35:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:35:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:35:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:35:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:35,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:35,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:35:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:35:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:35,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:35,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:35:35,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:35:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:35:35,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:35:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:35,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:35:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:35:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:35:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:35:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:35:36,870 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 19:35:36,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872793863] [2020-10-14 19:35:36,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:35:36,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:35:36,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484333260] [2020-10-14 19:35:36,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:35:36,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:35:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:35:36,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:35:36,875 INFO L87 Difference]: Start difference. First operand 7590 states and 11844 transitions. Second operand 7 states. [2020-10-14 19:35:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:35:58,022 INFO L93 Difference]: Finished difference Result 22362 states and 35542 transitions. [2020-10-14 19:35:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:35:58,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1716 [2020-10-14 19:35:58,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:35:58,112 INFO L225 Difference]: With dead ends: 22362 [2020-10-14 19:35:58,112 INFO L226 Difference]: Without dead ends: 14778 [2020-10-14 19:35:58,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:35:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14778 states. [2020-10-14 19:35:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14778 to 14705. [2020-10-14 19:35:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14705 states. [2020-10-14 19:35:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 22204 transitions. [2020-10-14 19:35:58,526 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 22204 transitions. Word has length 1716 [2020-10-14 19:35:58,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:35:58,527 INFO L479 AbstractCegarLoop]: Abstraction has 14705 states and 22204 transitions. [2020-10-14 19:35:58,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:35:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 22204 transitions. [2020-10-14 19:35:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2020-10-14 19:35:58,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:35:58,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:58,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:35:58,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:35:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:35:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash 880705701, now seen corresponding path program 1 times [2020-10-14 19:35:58,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:35:58,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128108072] [2020-10-14 19:35:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:35:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:35:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:35:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:03,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:03,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1747 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-14 19:36:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:10,951 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-14 19:36:11,127 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-14 19:36:11,298 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-14 19:36:11,544 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2020-10-14 19:36:11,720 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2020-10-14 19:36:11,854 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-14 19:36:11,992 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-14 19:36:12,140 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-14 19:36:12,284 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-14 19:36:12,438 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-14 19:36:12,632 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-14 19:36:12,809 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-10-14 19:36:12,998 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-14 19:36:13,206 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-14 19:36:13,440 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2020-10-14 19:36:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:36:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:36:13,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:36:13,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:13,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:36:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:36:13,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:36:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:36:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:36:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:36:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:36:14,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:36:14,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:36:14,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:36:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:36:14,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:36:14,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:36:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:36:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:36:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:36:14,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:36:36,498 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 19:36:36,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128108072] [2020-10-14 19:36:36,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:36:36,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 19:36:36,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991855924] [2020-10-14 19:36:36,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 19:36:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:36:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 19:36:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-14 19:36:36,502 INFO L87 Difference]: Start difference. First operand 14705 states and 22204 transitions. Second operand 24 states. [2020-10-14 19:36:37,315 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-14 19:36:42,290 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-14 19:36:43,343 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-14 19:36:45,488 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-14 19:36:53,805 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-14 19:37:02,031 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 19:37:05,196 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-14 19:37:10,758 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 19:37:14,440 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-14 19:37:19,251 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-14 19:37:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:37:36,565 INFO L93 Difference]: Finished difference Result 34195 states and 52640 transitions. [2020-10-14 19:37:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 19:37:36,567 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 1721 [2020-10-14 19:37:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:37:36,644 INFO L225 Difference]: With dead ends: 34195 [2020-10-14 19:37:36,644 INFO L226 Difference]: Without dead ends: 19496 [2020-10-14 19:37:36,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 19:37:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19496 states. [2020-10-14 19:37:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19496 to 19492. [2020-10-14 19:37:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19492 states. [2020-10-14 19:37:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19492 states to 19492 states and 27505 transitions. [2020-10-14 19:37:37,200 INFO L78 Accepts]: Start accepts. Automaton has 19492 states and 27505 transitions. Word has length 1721 [2020-10-14 19:37:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:37:37,202 INFO L479 AbstractCegarLoop]: Abstraction has 19492 states and 27505 transitions. [2020-10-14 19:37:37,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 19:37:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 19492 states and 27505 transitions. [2020-10-14 19:37:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-14 19:37:37,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:37:37,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1] [2020-10-14 19:37:37,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:37:37,281 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:37:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:37:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash -588737901, now seen corresponding path program 1 times [2020-10-14 19:37:37,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:37:37,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502564095] [2020-10-14 19:37:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:37:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:42,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:42,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-14 19:37:42,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1699 [2020-10-14 19:37:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:37:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:37:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:42,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:37:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:37:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:37:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:37:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:37:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:43,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:37:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:37:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:37:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:37:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:37:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:37:43,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:37:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:37:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:37:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:37:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:37:45,670 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 19:37:45,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502564095] [2020-10-14 19:37:45,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:37:45,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:37:45,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853495432] [2020-10-14 19:37:45,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:37:45,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:37:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:37:45,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:37:45,673 INFO L87 Difference]: Start difference. First operand 19492 states and 27505 transitions. Second operand 6 states.