/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/Problem04_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:24:49,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:24:49,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:24:49,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:24:49,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:24:49,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:24:49,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:24:49,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:24:49,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:24:49,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:24:49,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:24:49,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:24:49,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:24:49,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:24:49,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:24:49,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:24:49,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:24:49,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:24:49,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:24:49,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:24:49,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:24:49,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:24:49,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:24:49,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:24:49,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:24:49,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:24:49,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:24:49,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:24:49,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:24:49,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:24:49,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:24:49,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:24:49,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:24:49,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:24:49,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:24:49,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:24:49,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:24:49,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:24:49,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:24:49,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:24:49,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:24:49,245 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 19:24:49,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:24:49,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:24:49,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:24:49,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:24:49,292 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:24:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:24:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:24:49,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:24:49,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:24:49,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:24:49,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:24:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:24:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:24:49,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:24:49,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:24:49,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:24:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:24:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:24:49,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:24:49,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:24:49,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:24:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:24:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:24:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:24:49,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:24:49,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:24:49,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:24:49,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:24:49,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:24:49,298 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 19:24:49,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:24:49,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:24:49,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:24:49,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:24:49,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:24:49,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-14 19:24:49,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce1f2f1/7e4984132fc44f80a660b2ec8a833f21/FLAGd5433d2d3 [2020-10-14 19:24:50,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:24:50,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-14 19:24:50,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce1f2f1/7e4984132fc44f80a660b2ec8a833f21/FLAGd5433d2d3 [2020-10-14 19:24:51,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84ce1f2f1/7e4984132fc44f80a660b2ec8a833f21 [2020-10-14 19:24:51,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:24:51,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:24:51,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:24:51,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:24:51,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:24:51,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:51" (1/1) ... [2020-10-14 19:24:51,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3225ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:51, skipping insertion in model container [2020-10-14 19:24:51,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:51" (1/1) ... [2020-10-14 19:24:51,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:24:51,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:24:52,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:24:52,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:24:53,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:24:53,430 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:24:53,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53 WrapperNode [2020-10-14 19:24:53,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:24:53,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:24:53,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:24:53,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:24:53,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (1/1) ... [2020-10-14 19:24:53,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:24:53,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:24:53,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:24:53,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:24:53,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (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 19:24:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:24:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:24:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:24:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:24:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:24:53,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:24:53,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:24:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:24:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:24:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:24:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:24:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:24:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:24:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:24:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:24:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:24:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:24:57,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:24:57,791 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:24:57,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:57 BoogieIcfgContainer [2020-10-14 19:24:57,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:24:57,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:24:57,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:24:57,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:24:57,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:24:51" (1/3) ... [2020-10-14 19:24:57,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526793bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:57, skipping insertion in model container [2020-10-14 19:24:57,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:53" (2/3) ... [2020-10-14 19:24:57,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526793bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:57, skipping insertion in model container [2020-10-14 19:24:57,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:57" (3/3) ... [2020-10-14 19:24:57,812 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label27.c [2020-10-14 19:24:57,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:24:57,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:24:57,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:24:57,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:24:57,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:24:57,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:24:57,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:24:57,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:24:57,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:24:57,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:24:57,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:24:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:24:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2020-10-14 19:24:57,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:24:57,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:57,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:24:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:24:57,964 INFO L82 PathProgramCache]: Analyzing trace with hash 225301075, now seen corresponding path program 1 times [2020-10-14 19:24:57,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:24:57,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216100635] [2020-10-14 19:24:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:24:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:24:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-14 19:25:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:25:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:03,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:03,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:25:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:25:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 800 [2020-10-14 19:25:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 19:25:04,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:04,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:04,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:25:04,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:04,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:25:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:25:06,465 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 19:25:06,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216100635] [2020-10-14 19:25:06,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:25:06,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:25:06,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769326565] [2020-10-14 19:25:06,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:25:06,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:06,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:25:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:25:06,496 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 19:25:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:18,832 INFO L93 Difference]: Finished difference Result 3521 states and 6826 transitions. [2020-10-14 19:25:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:25:18,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 792 [2020-10-14 19:25:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:18,884 INFO L225 Difference]: With dead ends: 3521 [2020-10-14 19:25:18,884 INFO L226 Difference]: Without dead ends: 2547 [2020-10-14 19:25:18,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:25:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-10-14 19:25:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2020-10-14 19:25:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2020-10-14 19:25:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4223 transitions. [2020-10-14 19:25:19,085 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4223 transitions. Word has length 792 [2020-10-14 19:25:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:19,091 INFO L479 AbstractCegarLoop]: Abstraction has 2534 states and 4223 transitions. [2020-10-14 19:25:19,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:25:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4223 transitions. [2020-10-14 19:25:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-14 19:25:19,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:19,121 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:19,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:25:19,122 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:19,123 INFO L82 PathProgramCache]: Analyzing trace with hash 497149731, now seen corresponding path program 1 times [2020-10-14 19:25:19,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:19,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799116283] [2020-10-14 19:25:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:24,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-14 19:25:24,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:25:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-14 19:25:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:24,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:25:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:25:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:25:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 19:25:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:24,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:24,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:25:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:24,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:25:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:24,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:24,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:25:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 19:25:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:24,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:25:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:25:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:24,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 19:25:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:24,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:25:24,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:25:24,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:24,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:25:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:25:24,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:25:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:25:25,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799116283] [2020-10-14 19:25:25,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:25:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801712802] [2020-10-14 19:25:25,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:25:25,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:25:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:25:25,571 INFO L87 Difference]: Start difference. First operand 2534 states and 4223 transitions. Second operand 8 states. [2020-10-14 19:25:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:35,391 INFO L93 Difference]: Finished difference Result 7675 states and 12888 transitions. [2020-10-14 19:25:35,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 19:25:35,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 827 [2020-10-14 19:25:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:35,422 INFO L225 Difference]: With dead ends: 7675 [2020-10-14 19:25:35,422 INFO L226 Difference]: Without dead ends: 5147 [2020-10-14 19:25:35,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:25:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2020-10-14 19:25:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 5135. [2020-10-14 19:25:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5135 states. [2020-10-14 19:25:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 7599 transitions. [2020-10-14 19:25:35,580 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 7599 transitions. Word has length 827 [2020-10-14 19:25:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:35,580 INFO L479 AbstractCegarLoop]: Abstraction has 5135 states and 7599 transitions. [2020-10-14 19:25:35,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:25:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 7599 transitions. [2020-10-14 19:25:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-14 19:25:35,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:35,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:35,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:25:35,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash 730919608, now seen corresponding path program 1 times [2020-10-14 19:25:35,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:35,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869708805] [2020-10-14 19:25:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:40,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:40,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-14 19:25:40,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 19:25:40,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:40,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 19:25:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:25:40,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 875 [2020-10-14 19:25:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:41,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:41,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:25:41,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:41,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:25:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:41,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:25:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:25:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 19:25:41,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:41,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:25:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:25:42,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869708805] [2020-10-14 19:25:42,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:25:42,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:25:42,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816307980] [2020-10-14 19:25:42,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:25:42,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:25:42,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:25:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:25:42,480 INFO L87 Difference]: Start difference. First operand 5135 states and 7599 transitions. Second operand 5 states. [2020-10-14 19:25:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:25:51,079 INFO L93 Difference]: Finished difference Result 15379 states and 23197 transitions. [2020-10-14 19:25:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:25:51,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 865 [2020-10-14 19:25:51,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:25:51,137 INFO L225 Difference]: With dead ends: 15379 [2020-10-14 19:25:51,137 INFO L226 Difference]: Without dead ends: 10250 [2020-10-14 19:25:51,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:25:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2020-10-14 19:25:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10246. [2020-10-14 19:25:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10246 states. [2020-10-14 19:25:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 14762 transitions. [2020-10-14 19:25:51,417 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 14762 transitions. Word has length 865 [2020-10-14 19:25:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:25:51,418 INFO L479 AbstractCegarLoop]: Abstraction has 10246 states and 14762 transitions. [2020-10-14 19:25:51,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:25:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 14762 transitions. [2020-10-14 19:25:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2020-10-14 19:25:51,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:25:51,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:51,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:25:51,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:25:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:25:51,459 INFO L82 PathProgramCache]: Analyzing trace with hash 526133001, now seen corresponding path program 1 times [2020-10-14 19:25:51,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:25:51,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745245669] [2020-10-14 19:25:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:25:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:51,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-14 19:25:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 19:25:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-14 19:25:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:25:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:25:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:58,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:58,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:25:58,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:25:58,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:58,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:58,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:58,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:25:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:25:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:25:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:25:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:58,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:25:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:25:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:25:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:25:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:25:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:25:58,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:25:58,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:25:58,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:25:58,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 19:25:58,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:25:58,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:25:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:25:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:25:58,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:25:58,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:26:02,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745245669] [2020-10-14 19:26:02,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:02,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:26:02,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230331596] [2020-10-14 19:26:02,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:26:02,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:02,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:26:02,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:26:02,742 INFO L87 Difference]: Start difference. First operand 10246 states and 14762 transitions. Second operand 17 states. [2020-10-14 19:26:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:15,589 INFO L93 Difference]: Finished difference Result 21076 states and 30390 transitions. [2020-10-14 19:26:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:26:15,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 892 [2020-10-14 19:26:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:15,640 INFO L225 Difference]: With dead ends: 21076 [2020-10-14 19:26:15,640 INFO L226 Difference]: Without dead ends: 10836 [2020-10-14 19:26:15,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:26:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10836 states. [2020-10-14 19:26:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10836 to 10832. [2020-10-14 19:26:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10832 states. [2020-10-14 19:26:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10832 states to 10832 states and 15363 transitions. [2020-10-14 19:26:15,922 INFO L78 Accepts]: Start accepts. Automaton has 10832 states and 15363 transitions. Word has length 892 [2020-10-14 19:26:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:15,924 INFO L479 AbstractCegarLoop]: Abstraction has 10832 states and 15363 transitions. [2020-10-14 19:26:15,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:26:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 10832 states and 15363 transitions. [2020-10-14 19:26:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2020-10-14 19:26:15,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:15,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:15,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:26:15,962 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:15,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -742533884, now seen corresponding path program 1 times [2020-10-14 19:26:15,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:15,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578732386] [2020-10-14 19:26:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-14 19:26:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:26:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-14 19:26:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:21,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 19:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 19:26:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:21,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:21,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:21,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:26:21,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:21,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:21,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:21,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:26:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:26:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:21,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:26:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:26:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:21,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:26:21,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:26:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 19:26:21,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:21,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:26:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 19:26:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:21,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:26:21,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:26:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 19:26:22,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578732386] [2020-10-14 19:26:22,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:22,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:26:22,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847123252] [2020-10-14 19:26:22,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:26:22,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:22,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:26:22,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:26:22,314 INFO L87 Difference]: Start difference. First operand 10832 states and 15363 transitions. Second operand 7 states. [2020-10-14 19:26:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:26:37,451 INFO L93 Difference]: Finished difference Result 37940 states and 55825 transitions. [2020-10-14 19:26:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:26:37,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 942 [2020-10-14 19:26:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:26:37,569 INFO L225 Difference]: With dead ends: 37940 [2020-10-14 19:26:37,569 INFO L226 Difference]: Without dead ends: 27114 [2020-10-14 19:26:37,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:26:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27114 states. [2020-10-14 19:26:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27114 to 23738. [2020-10-14 19:26:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23738 states. [2020-10-14 19:26:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23738 states to 23738 states and 31677 transitions. [2020-10-14 19:26:38,149 INFO L78 Accepts]: Start accepts. Automaton has 23738 states and 31677 transitions. Word has length 942 [2020-10-14 19:26:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:26:38,150 INFO L479 AbstractCegarLoop]: Abstraction has 23738 states and 31677 transitions. [2020-10-14 19:26:38,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:26:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 23738 states and 31677 transitions. [2020-10-14 19:26:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2020-10-14 19:26:38,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:26:38,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:26:38,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:26:38,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:26:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:26:38,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2134876777, now seen corresponding path program 1 times [2020-10-14 19:26:38,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:26:38,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626170421] [2020-10-14 19:26:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:26:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:43,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1171 [2020-10-14 19:26:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:26:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:26:43,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:26:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-14 19:26:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 604 [2020-10-14 19:26:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:45,212 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-14 19:26:45,400 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-14 19:26:45,629 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-14 19:26:45,924 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 48 [2020-10-14 19:26:46,202 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 43 [2020-10-14 19:26:46,510 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 42 [2020-10-14 19:26:46,645 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-14 19:26:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:26:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:47,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:26:47,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:26:47,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:47,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:47,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:26:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:26:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 19:26:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:47,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 19:26:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:26:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:26:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:26:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:26:47,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:26:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 19:26:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:26:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:26:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:26:47,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:26:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:26:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:26:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:26:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:26:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 350 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 19:26:53,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626170421] [2020-10-14 19:26:53,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:26:53,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:26:53,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671333727] [2020-10-14 19:26:53,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:26:53,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:26:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:26:53,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:26:53,754 INFO L87 Difference]: Start difference. First operand 23738 states and 31677 transitions. Second operand 17 states. [2020-10-14 19:26:59,534 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 19:26:59,748 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 19:27:00,745 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-14 19:27:01,784 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-14 19:27:02,619 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2020-10-14 19:27:03,577 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-14 19:27:07,413 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-14 19:27:07,732 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 90 [2020-10-14 19:27:10,852 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-14 19:27:14,981 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-14 19:27:15,227 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-14 19:27:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:19,045 INFO L93 Difference]: Finished difference Result 48046 states and 64010 transitions. [2020-10-14 19:27:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 19:27:19,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1151 [2020-10-14 19:27:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:19,141 INFO L225 Difference]: With dead ends: 48046 [2020-10-14 19:27:19,142 INFO L226 Difference]: Without dead ends: 24338 [2020-10-14 19:27:19,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:27:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24338 states. [2020-10-14 19:27:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24338 to 24334. [2020-10-14 19:27:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24334 states. [2020-10-14 19:27:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24334 states to 24334 states and 32285 transitions. [2020-10-14 19:27:19,701 INFO L78 Accepts]: Start accepts. Automaton has 24334 states and 32285 transitions. Word has length 1151 [2020-10-14 19:27:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:19,702 INFO L479 AbstractCegarLoop]: Abstraction has 24334 states and 32285 transitions. [2020-10-14 19:27:19,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:27:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 24334 states and 32285 transitions. [2020-10-14 19:27:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2020-10-14 19:27:19,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:19,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:27:19,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:27:19,783 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:19,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1908446544, now seen corresponding path program 1 times [2020-10-14 19:27:19,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:19,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096550877] [2020-10-14 19:27:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:20,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:25,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:25,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1328 [2020-10-14 19:27:25,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:27:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-14 19:27:25,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:25,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:25,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:27:25,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 19:27:25,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 395 [2020-10-14 19:27:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:25,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:25,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:27:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:25,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:25,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:25,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:25,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:27:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:25,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:25,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 19:27:25,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:27:25,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:25,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:25,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:27:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 19:27:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:25,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:27:25,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:27:25,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:25,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:27:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 19:27:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:27:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-14 19:27:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:27:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:26,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:27:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 19:27:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 19:27:27,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096550877] [2020-10-14 19:27:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:27,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:27:27,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449117563] [2020-10-14 19:27:27,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:27:27,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:27:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:27:27,866 INFO L87 Difference]: Start difference. First operand 24334 states and 32285 transitions. Second operand 8 states. [2020-10-14 19:27:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:27:49,991 INFO L93 Difference]: Finished difference Result 66096 states and 91023 transitions. [2020-10-14 19:27:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:27:49,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1306 [2020-10-14 19:27:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:27:50,136 INFO L225 Difference]: With dead ends: 66096 [2020-10-14 19:27:50,136 INFO L226 Difference]: Without dead ends: 41792 [2020-10-14 19:27:50,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:27:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41792 states. [2020-10-14 19:27:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41792 to 41176. [2020-10-14 19:27:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41176 states. [2020-10-14 19:27:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41176 states to 41176 states and 53246 transitions. [2020-10-14 19:27:50,937 INFO L78 Accepts]: Start accepts. Automaton has 41176 states and 53246 transitions. Word has length 1306 [2020-10-14 19:27:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:27:50,937 INFO L479 AbstractCegarLoop]: Abstraction has 41176 states and 53246 transitions. [2020-10-14 19:27:50,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:27:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 41176 states and 53246 transitions. [2020-10-14 19:27:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2020-10-14 19:27:51,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:27:51,030 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:51,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:27:51,031 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:27:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:27:51,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1328204744, now seen corresponding path program 1 times [2020-10-14 19:27:51,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:27:51,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349248825] [2020-10-14 19:27:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:27:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:54,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1226 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 19:27:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:27:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:27:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:27:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 19:27:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:27:56,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 19:27:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:27:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 19:27:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-10-14 19:27:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 19:27:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 19:27:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:27:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:27:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 19:27:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-14 19:27:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:27:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:27:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:27:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:27:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:27:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:27:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 653 proven. 19 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-14 19:27:58,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349248825] [2020-10-14 19:27:58,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:27:58,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:27:58,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139279606] [2020-10-14 19:27:58,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:27:58,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:27:58,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:27:58,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:27:58,448 INFO L87 Difference]: Start difference. First operand 41176 states and 53246 transitions. Second operand 7 states. [2020-10-14 19:28:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:28:08,550 INFO L93 Difference]: Finished difference Result 83581 states and 109305 transitions. [2020-10-14 19:28:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:28:08,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1202 [2020-10-14 19:28:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:28:08,673 INFO L225 Difference]: With dead ends: 83581 [2020-10-14 19:28:08,673 INFO L226 Difference]: Without dead ends: 42415 [2020-10-14 19:28:08,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:28:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42415 states. [2020-10-14 19:28:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42415 to 42350. [2020-10-14 19:28:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42350 states. [2020-10-14 19:28:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42350 states to 42350 states and 55577 transitions. [2020-10-14 19:28:09,517 INFO L78 Accepts]: Start accepts. Automaton has 42350 states and 55577 transitions. Word has length 1202 [2020-10-14 19:28:09,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:28:09,517 INFO L479 AbstractCegarLoop]: Abstraction has 42350 states and 55577 transitions. [2020-10-14 19:28:09,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:28:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 42350 states and 55577 transitions. [2020-10-14 19:28:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2020-10-14 19:28:09,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:28:09,618 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:28:09,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:28:09,618 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:28:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:28:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1189184025, now seen corresponding path program 1 times [2020-10-14 19:28:09,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:28:09,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788930969] [2020-10-14 19:28:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:28:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:09,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1477 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 19:28:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 395 [2020-10-14 19:28:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:28:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:14,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:14,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:28:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:15,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:15,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 19:28:15,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:28:15,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:15,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-14 19:28:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:28:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:28:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 19:28:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:15,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:28:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:28:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:28:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-14 19:28:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-14 19:28:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-14 19:28:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 19:28:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:28:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:28:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:28:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 19:28:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:28:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 915 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 19:28:17,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788930969] [2020-10-14 19:28:17,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:28:17,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:28:17,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967911089] [2020-10-14 19:28:17,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:28:17,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:28:17,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:28:17,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:28:17,288 INFO L87 Difference]: Start difference. First operand 42350 states and 55577 transitions. Second operand 7 states.