/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem13_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:59:14,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:59:14,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:59:14,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:59:14,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:59:14,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:59:14,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:59:14,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:59:14,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:59:14,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:59:14,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:59:14,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:59:14,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:59:14,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:59:14,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:59:14,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:59:14,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:59:14,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:59:14,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:59:14,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:59:14,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:59:14,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:59:14,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:59:14,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:59:14,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:59:14,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:59:14,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:59:14,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:59:14,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:59:14,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:59:14,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:59:14,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:59:14,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:59:14,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:59:14,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:59:14,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:59:14,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:59:14,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:59:14,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:59:14,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:59:14,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:59:14,292 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 02:59:14,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:59:14,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:59:14,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:59:14,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:59:14,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:59:14,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:59:14,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:59:14,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:59:14,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:59:14,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:59:14,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:59:14,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:59:14,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:59:14,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:59:14,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:59:14,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:59:14,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:59:14,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:59:14,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:59:14,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:59:14,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:59:14,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:59:14,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:59:14,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:59:14,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:59:14,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:59:14,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:59:14,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:59:14,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:59:14,353 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:59:14,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:59:14,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:59:14,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:59:14,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:59:14,741 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:59:14,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10.c [2020-10-14 02:59:14,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57043ff28/f539a30b4f7e474fafb8a877e5f650b3/FLAG9e6028ea2 [2020-10-14 02:59:15,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:59:15,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label10.c [2020-10-14 02:59:15,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57043ff28/f539a30b4f7e474fafb8a877e5f650b3/FLAG9e6028ea2 [2020-10-14 02:59:16,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57043ff28/f539a30b4f7e474fafb8a877e5f650b3 [2020-10-14 02:59:16,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:59:16,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:59:16,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:59:16,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:59:16,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:59:16,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:59:16" (1/1) ... [2020-10-14 02:59:16,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a565f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:16, skipping insertion in model container [2020-10-14 02:59:16,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:59:16" (1/1) ... [2020-10-14 02:59:16,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:59:16,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:59:18,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:59:18,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:59:19,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:59:19,944 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:59:19,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19 WrapperNode [2020-10-14 02:59:19,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:59:19,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:59:19,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:59:19,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:59:19,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:19,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (1/1) ... [2020-10-14 02:59:20,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:59:20,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:59:20,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:59:20,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:59:20,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (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 02:59:20,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:59:20,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:59:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:59:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:59:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:59:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:59:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:59:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:59:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:59:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:59:20,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:59:20,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:59:33,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:59:33,112 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:59:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:59:33 BoogieIcfgContainer [2020-10-14 02:59:33,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:59:33,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:59:33,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:59:33,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:59:33,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:59:16" (1/3) ... [2020-10-14 02:59:33,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e9af7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:59:33, skipping insertion in model container [2020-10-14 02:59:33,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:59:19" (2/3) ... [2020-10-14 02:59:33,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e9af7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:59:33, skipping insertion in model container [2020-10-14 02:59:33,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:59:33" (3/3) ... [2020-10-14 02:59:33,141 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label10.c [2020-10-14 02:59:33,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:59:33,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:59:33,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:59:33,215 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:59:33,215 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:59:33,215 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:59:33,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:59:33,216 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:59:33,216 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:59:33,216 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:59:33,216 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:59:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 02:59:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 02:59:33,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:33,277 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] [2020-10-14 02:59:33,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2146460016, now seen corresponding path program 1 times [2020-10-14 02:59:33,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:33,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085521844] [2020-10-14 02:59:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:34,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 02:59:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-14 02:59:34,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:34,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:59:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:59:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 02:59:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:59:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 02:59:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:34,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:59:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:59:34,250 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 02:59:34,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085521844] [2020-10-14 02:59:34,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:59:34,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:59:34,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499335151] [2020-10-14 02:59:34,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:59:34,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:59:34,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:59:34,285 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 02:59:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:49,254 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-14 02:59:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:49,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 02:59:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:49,301 INFO L225 Difference]: With dead ends: 3230 [2020-10-14 02:59:49,301 INFO L226 Difference]: Without dead ends: 2026 [2020-10-14 02:59:49,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:59:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-14 02:59:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-14 02:59:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-14 02:59:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-14 02:59:49,520 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 53 [2020-10-14 02:59:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:49,521 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-14 02:59:49,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:59:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-14 02:59:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 02:59:49,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:49,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:49,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:59:49,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:49,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2103477333, now seen corresponding path program 1 times [2020-10-14 02:59:49,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:49,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949140592] [2020-10-14 02:59:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:59:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:59:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-10-14 02:59:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:52,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:59:52,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:59:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 02:59:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:52,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:52,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:52,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:59:52,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:52,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:52,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:52,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:52,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:59:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:59:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:53,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:59:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:59:53,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949140592] [2020-10-14 02:59:53,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:53,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:59:53,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012882327] [2020-10-14 02:59:53,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:59:53,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:53,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:59:53,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:59:53,173 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 5 states. [2020-10-14 03:00:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:11,000 INFO L93 Difference]: Finished difference Result 5709 states and 9479 transitions. [2020-10-14 03:00:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:00:11,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 03:00:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:11,027 INFO L225 Difference]: With dead ends: 5709 [2020-10-14 03:00:11,028 INFO L226 Difference]: Without dead ends: 3706 [2020-10-14 03:00:11,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:00:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2020-10-14 03:00:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3672. [2020-10-14 03:00:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 03:00:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5312 transitions. [2020-10-14 03:00:11,155 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5312 transitions. Word has length 128 [2020-10-14 03:00:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:11,156 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 5312 transitions. [2020-10-14 03:00:11,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:00:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5312 transitions. [2020-10-14 03:00:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 03:00:11,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:00:11,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:11,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:00:11,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:00:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:00:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 674920215, now seen corresponding path program 1 times [2020-10-14 03:00:11,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:00:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022134219] [2020-10-14 03:00:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:00:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:12,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 03:00:12,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:00:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-14 03:00:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:12,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:00:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:00:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:00:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:00:12,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:00:12,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:12,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:00:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:00:12,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:00:12,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:12,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:00:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:00:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:00:12,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022134219] [2020-10-14 03:00:12,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:00:12,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:00:12,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675410836] [2020-10-14 03:00:12,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:00:12,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:00:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:00:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:00:12,978 INFO L87 Difference]: Start difference. First operand 3672 states and 5312 transitions. Second operand 5 states. [2020-10-14 03:00:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:38,388 INFO L93 Difference]: Finished difference Result 10740 states and 15798 transitions. [2020-10-14 03:00:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:00:38,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 03:00:38,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:38,431 INFO L225 Difference]: With dead ends: 10740 [2020-10-14 03:00:38,431 INFO L226 Difference]: Without dead ends: 7074 [2020-10-14 03:00:38,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:00:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2020-10-14 03:00:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 6999. [2020-10-14 03:00:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6999 states. [2020-10-14 03:00:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 9886 transitions. [2020-10-14 03:00:38,680 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 9886 transitions. Word has length 135 [2020-10-14 03:00:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:38,683 INFO L479 AbstractCegarLoop]: Abstraction has 6999 states and 9886 transitions. [2020-10-14 03:00:38,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:00:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 9886 transitions. [2020-10-14 03:00:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 03:00:38,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:00:38,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:38,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:00:38,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:00:38,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:00:38,699 INFO L82 PathProgramCache]: Analyzing trace with hash -2081707051, now seen corresponding path program 1 times [2020-10-14 03:00:38,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:00:38,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198093653] [2020-10-14 03:00:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:00:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:40,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:40,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 03:00:40,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:00:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-14 03:00:40,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:40,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 03:00:40,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 03:00:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:00:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:40,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:40,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:00:40,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:00:40,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:40,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:40,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:00:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:40,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:40,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:00:40,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 03:00:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:40,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:00:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:00:40,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198093653] [2020-10-14 03:00:40,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:00:40,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:00:40,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030594018] [2020-10-14 03:00:40,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:00:40,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:00:40,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:00:40,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:00:40,878 INFO L87 Difference]: Start difference. First operand 6999 states and 9886 transitions. Second operand 6 states. [2020-10-14 03:01:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:10,577 INFO L93 Difference]: Finished difference Result 21368 states and 32255 transitions. [2020-10-14 03:01:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:01:10,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-14 03:01:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:10,676 INFO L225 Difference]: With dead ends: 21368 [2020-10-14 03:01:10,676 INFO L226 Difference]: Without dead ends: 14375 [2020-10-14 03:01:10,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:01:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14375 states. [2020-10-14 03:01:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14375 to 14343. [2020-10-14 03:01:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14343 states. [2020-10-14 03:01:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14343 states to 14343 states and 20603 transitions. [2020-10-14 03:01:11,170 INFO L78 Accepts]: Start accepts. Automaton has 14343 states and 20603 transitions. Word has length 135 [2020-10-14 03:01:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:11,172 INFO L479 AbstractCegarLoop]: Abstraction has 14343 states and 20603 transitions. [2020-10-14 03:01:11,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:01:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 14343 states and 20603 transitions. [2020-10-14 03:01:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 03:01:11,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:11,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:11,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:01:11,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash 905460621, now seen corresponding path program 1 times [2020-10-14 03:01:11,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:11,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471017052] [2020-10-14 03:01:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:11,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:12,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 03:01:12,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:01:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-10-14 03:01:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:12,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:01:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:01:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 03:01:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:12,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:12,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:12,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:01:12,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:12,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:01:12,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:01:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:01:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:01:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:01:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:01:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:12,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471017052] [2020-10-14 03:01:12,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:01:12,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:01:12,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655044512] [2020-10-14 03:01:12,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:12,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:12,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:12,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:12,905 INFO L87 Difference]: Start difference. First operand 14343 states and 20603 transitions. Second operand 5 states. [2020-10-14 03:01:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:36,573 INFO L93 Difference]: Finished difference Result 35306 states and 52081 transitions. [2020-10-14 03:01:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:01:36,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-14 03:01:36,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:36,655 INFO L225 Difference]: With dead ends: 35306 [2020-10-14 03:01:36,655 INFO L226 Difference]: Without dead ends: 20969 [2020-10-14 03:01:36,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 03:01:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20969 states. [2020-10-14 03:01:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20969 to 20907. [2020-10-14 03:01:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20907 states. [2020-10-14 03:01:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20907 states to 20907 states and 29595 transitions. [2020-10-14 03:01:37,184 INFO L78 Accepts]: Start accepts. Automaton has 20907 states and 29595 transitions. Word has length 155 [2020-10-14 03:01:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:37,185 INFO L479 AbstractCegarLoop]: Abstraction has 20907 states and 29595 transitions. [2020-10-14 03:01:37,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:01:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 20907 states and 29595 transitions. [2020-10-14 03:01:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 03:01:37,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:37,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:37,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:01:37,192 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1313679955, now seen corresponding path program 1 times [2020-10-14 03:01:37,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:37,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801763591] [2020-10-14 03:01:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 03:01:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:01:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2412 [2020-10-14 03:01:39,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:39,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 03:01:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:01:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:01:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:39,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:01:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:01:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:39,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:01:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:01:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:01:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:01:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:01:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 03:01:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:01:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:01:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:01:39,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:01:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:01:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:01:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:01:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:01:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:01:39,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801763591] [2020-10-14 03:01:39,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:01:39,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:01:39,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601656887] [2020-10-14 03:01:39,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:01:39,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:01:39,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:01:39,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:01:39,971 INFO L87 Difference]: Start difference. First operand 20907 states and 29595 transitions. Second operand 5 states. [2020-10-14 03:02:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:04,426 INFO L93 Difference]: Finished difference Result 61320 states and 90665 transitions. [2020-10-14 03:02:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:04,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 03:02:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:04,659 INFO L225 Difference]: With dead ends: 61320 [2020-10-14 03:02:04,660 INFO L226 Difference]: Without dead ends: 40419 [2020-10-14 03:02:04,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40419 states. [2020-10-14 03:02:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40419 to 40412. [2020-10-14 03:02:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40412 states. [2020-10-14 03:02:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40412 states to 40412 states and 56947 transitions. [2020-10-14 03:02:05,661 INFO L78 Accepts]: Start accepts. Automaton has 40412 states and 56947 transitions. Word has length 172 [2020-10-14 03:02:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:05,662 INFO L479 AbstractCegarLoop]: Abstraction has 40412 states and 56947 transitions. [2020-10-14 03:02:05,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:02:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40412 states and 56947 transitions. [2020-10-14 03:02:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 03:02:05,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:05,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:05,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:02:05,672 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:05,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1070991524, now seen corresponding path program 1 times [2020-10-14 03:02:05,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:05,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743397499] [2020-10-14 03:02:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 03:02:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:02:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 03:02:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:06,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:02:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 03:02:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:06,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:06,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:06,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:02:06,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:06,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:02:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:07,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:02:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:02:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-14 03:02:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-14 03:02:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 03:02:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:02:07,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743397499] [2020-10-14 03:02:07,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:02:07,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:02:07,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561109430] [2020-10-14 03:02:07,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:02:07,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:02:07,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:02:07,308 INFO L87 Difference]: Start difference. First operand 40412 states and 56947 transitions. Second operand 6 states. [2020-10-14 03:02:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:02:25,585 INFO L93 Difference]: Finished difference Result 80809 states and 114195 transitions. [2020-10-14 03:02:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:02:25,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-10-14 03:02:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:02:25,742 INFO L225 Difference]: With dead ends: 80809 [2020-10-14 03:02:25,742 INFO L226 Difference]: Without dead ends: 40403 [2020-10-14 03:02:25,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:02:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40403 states. [2020-10-14 03:02:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40403 to 40397. [2020-10-14 03:02:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40397 states. [2020-10-14 03:02:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40397 states to 40397 states and 56911 transitions. [2020-10-14 03:02:26,608 INFO L78 Accepts]: Start accepts. Automaton has 40397 states and 56911 transitions. Word has length 189 [2020-10-14 03:02:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:02:26,609 INFO L479 AbstractCegarLoop]: Abstraction has 40397 states and 56911 transitions. [2020-10-14 03:02:26,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:02:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40397 states and 56911 transitions. [2020-10-14 03:02:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 03:02:26,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:02:26,623 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, 2, 2, 2, 2, 2, 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] [2020-10-14 03:02:26,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:02:26,624 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:02:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:02:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash 941202484, now seen corresponding path program 1 times [2020-10-14 03:02:26,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:02:26,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802912178] [2020-10-14 03:02:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:02:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:31,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:31,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 03:02:31,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:02:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 03:02:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:31,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:02:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:02:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:02:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:31,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:02:31,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:02:31,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:31,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:02:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:02:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:02:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:02:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:02:31,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:31,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:02:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:02:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:02:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:02:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:02:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:02:32,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:02:32,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:02:32,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:02:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 03:02:32,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:02:32,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:02:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:02:32,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:02:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:02:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:02:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:02:32,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802912178] [2020-10-14 03:02:32,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:02:32,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:02:32,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662929515] [2020-10-14 03:02:32,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:02:32,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:02:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:02:32,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:02:32,650 INFO L87 Difference]: Start difference. First operand 40397 states and 56911 transitions. Second operand 7 states.