/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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:08:33,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:08:33,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:08:33,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:08:33,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:08:33,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:08:33,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:08:33,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:08:33,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:08:33,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:08:33,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:08:33,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:08:33,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:08:33,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:08:33,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:08:33,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:08:33,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:08:33,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:08:33,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:08:33,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:08:33,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:08:33,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:08:33,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:08:33,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:08:33,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:08:33,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:08:33,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:08:33,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:08:33,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:08:33,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:08:33,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:08:33,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:08:33,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:08:33,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:08:33,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:08:33,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:08:33,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:08:33,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:08:33,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:08:33,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:08:33,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:08:33,372 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 03:08:33,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:08:33,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:08:33,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:08:33,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:08:33,419 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:08:33,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:08:33,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:08:33,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:08:33,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:08:33,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:08:33,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:08:33,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:08:33,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:08:33,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:08:33,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:08:33,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:08:33,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:08:33,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:08:33,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:08:33,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:08:33,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:08:33,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:08:33,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:08:33,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:08:33,426 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 03:08:33,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:08:33,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:08:33,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:08:33,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:08:33,778 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:08:33,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-14 03:08:33,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c0d6bd9/c399a44ca24e47e6a6f02910ccbee27b/FLAG2e57f976c [2020-10-14 03:08:34,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:08:34,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-14 03:08:34,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c0d6bd9/c399a44ca24e47e6a6f02910ccbee27b/FLAG2e57f976c [2020-10-14 03:08:35,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71c0d6bd9/c399a44ca24e47e6a6f02910ccbee27b [2020-10-14 03:08:35,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:08:35,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:08:35,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:35,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:08:35,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:08:35,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:35" (1/1) ... [2020-10-14 03:08:35,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:35, skipping insertion in model container [2020-10-14 03:08:35,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:35" (1/1) ... [2020-10-14 03:08:35,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:08:35,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:08:37,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:37,269 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:08:38,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:38,151 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:08:38,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38 WrapperNode [2020-10-14 03:08:38,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:38,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:08:38,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:08:38,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:08:38,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (1/1) ... [2020-10-14 03:08:38,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:08:38,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:08:38,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:08:38,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:08:38,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (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 03:08:38,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:08:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:08:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:08:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:08:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:08:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:08:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:08:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:08:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:08:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:08:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:08:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:08:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:08:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:08:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:08:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:08:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:08:51,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:08:51,080 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:08:51,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:08:51 BoogieIcfgContainer [2020-10-14 03:08:51,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:08:51,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:08:51,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:08:51,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:08:51,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:08:35" (1/3) ... [2020-10-14 03:08:51,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81c1644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:08:51, skipping insertion in model container [2020-10-14 03:08:51,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:38" (2/3) ... [2020-10-14 03:08:51,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81c1644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:08:51, skipping insertion in model container [2020-10-14 03:08:51,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:08:51" (3/3) ... [2020-10-14 03:08:51,112 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2020-10-14 03:08:51,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:08:51,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:08:51,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:08:51,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:08:51,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:08:51,196 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:08:51,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:08:51,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:08:51,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:08:51,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:08:51,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:08:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:08:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 03:08:51,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:08:51,268 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] [2020-10-14 03:08:51,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:08:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:08:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash -881047656, now seen corresponding path program 1 times [2020-10-14 03:08:51,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:08:51,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62614169] [2020-10-14 03:08:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:08:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-14 03:08:52,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:52,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:08:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:08:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:08:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:08:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:08:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:08:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:08:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:08:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:08:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:08:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 03:08:52,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:08:52,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:08:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:08:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:08:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:08:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:08:52,327 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 03:08:52,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62614169] [2020-10-14 03:08:52,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:08:52,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 03:08:52,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662036675] [2020-10-14 03:08:52,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:08:52,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:08:52,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:08:52,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:08:52,358 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 03:09:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:11,618 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 03:09:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:09:11,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 03:09:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:11,666 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 03:09:11,667 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 03:09:11,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:09:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 03:09:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 03:09:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 03:09:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 03:09:11,851 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 71 [2020-10-14 03:09:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:11,852 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 03:09:11,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 03:09:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 03:09:11,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:11,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:09:11,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:09:11,861 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:11,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1478649949, now seen corresponding path program 1 times [2020-10-14 03:09:11,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:11,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382465241] [2020-10-14 03:09:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:14,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:14,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 03:09:14,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:09:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2268 [2020-10-14 03:09:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:09:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:09:14,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:09:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:14,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:14,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:14,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:09:14,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:14,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:14,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:14,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:09:14,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:09:14,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:14,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:14,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:09:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:14,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382465241] [2020-10-14 03:09:14,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:14,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:14,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39975619] [2020-10-14 03:09:14,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:14,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:14,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:14,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:14,578 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 5 states. [2020-10-14 03:09:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:34,817 INFO L93 Difference]: Finished difference Result 5534 states and 9188 transitions. [2020-10-14 03:09:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:34,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 03:09:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:34,841 INFO L225 Difference]: With dead ends: 5534 [2020-10-14 03:09:34,841 INFO L226 Difference]: Without dead ends: 3606 [2020-10-14 03:09:34,848 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 03:09:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2020-10-14 03:09:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3582. [2020-10-14 03:09:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3582 states. [2020-10-14 03:09:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5169 transitions. [2020-10-14 03:09:34,973 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5169 transitions. Word has length 146 [2020-10-14 03:09:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:34,974 INFO L479 AbstractCegarLoop]: Abstraction has 3582 states and 5169 transitions. [2020-10-14 03:09:34,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5169 transitions. [2020-10-14 03:09:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:09:34,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:34,979 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, 1, 1, 1, 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 03:09:34,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:09:34,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1995231327, now seen corresponding path program 1 times [2020-10-14 03:09:34,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:34,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986473493] [2020-10-14 03:09:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:36,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:09:36,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:09:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-14 03:09:36,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:36,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:09:36,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:09:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:36,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:36,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:09:36,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:36,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:36,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:09:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:09:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:36,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 03:09:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:09:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:36,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986473493] [2020-10-14 03:09:36,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:09:36,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:09:36,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245660444] [2020-10-14 03:09:36,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:36,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:36,690 INFO L87 Difference]: Start difference. First operand 3582 states and 5169 transitions. Second operand 5 states. [2020-10-14 03:10:02,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:02,190 INFO L93 Difference]: Finished difference Result 10510 states and 15437 transitions. [2020-10-14 03:10:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:02,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:10:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:02,252 INFO L225 Difference]: With dead ends: 10510 [2020-10-14 03:10:02,252 INFO L226 Difference]: Without dead ends: 6934 [2020-10-14 03:10:02,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:10:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2020-10-14 03:10:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6882. [2020-10-14 03:10:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6882 states. [2020-10-14 03:10:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6882 states to 6882 states and 9716 transitions. [2020-10-14 03:10:02,484 INFO L78 Accepts]: Start accepts. Automaton has 6882 states and 9716 transitions. Word has length 153 [2020-10-14 03:10:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:02,485 INFO L479 AbstractCegarLoop]: Abstraction has 6882 states and 9716 transitions. [2020-10-14 03:10:02,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6882 states and 9716 transitions. [2020-10-14 03:10:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:10:02,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:02,491 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, 1, 1, 1, 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 03:10:02,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:10:02,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:02,492 INFO L82 PathProgramCache]: Analyzing trace with hash -391278179, now seen corresponding path program 1 times [2020-10-14 03:10:02,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:02,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535301294] [2020-10-14 03:10:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:05,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:10:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:10:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2552 [2020-10-14 03:10:05,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 03:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:10:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:10:05,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:05,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:05,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 03:10:05,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:10:05,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:05,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:10:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:05,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535301294] [2020-10-14 03:10:05,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:05,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33784132] [2020-10-14 03:10:05,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:05,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:05,405 INFO L87 Difference]: Start difference. First operand 6882 states and 9716 transitions. Second operand 5 states. [2020-10-14 03:10:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:31,325 INFO L93 Difference]: Finished difference Result 17035 states and 25071 transitions. [2020-10-14 03:10:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:31,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:10:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:31,382 INFO L225 Difference]: With dead ends: 17035 [2020-10-14 03:10:31,382 INFO L226 Difference]: Without dead ends: 10159 [2020-10-14 03:10:31,403 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 03:10:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2020-10-14 03:10:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 10143. [2020-10-14 03:10:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10143 states. [2020-10-14 03:10:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10143 states to 10143 states and 14060 transitions. [2020-10-14 03:10:31,713 INFO L78 Accepts]: Start accepts. Automaton has 10143 states and 14060 transitions. Word has length 153 [2020-10-14 03:10:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:31,715 INFO L479 AbstractCegarLoop]: Abstraction has 10143 states and 14060 transitions. [2020-10-14 03:10:31,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10143 states and 14060 transitions. [2020-10-14 03:10:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 03:10:31,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:31,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:31,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:10:31,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1810823663, now seen corresponding path program 1 times [2020-10-14 03:10:31,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:31,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155597699] [2020-10-14 03:10:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:33,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:33,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 03:10:33,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:10:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-14 03:10:33,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:33,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 03:10:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:10:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:33,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:10:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:33,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:33,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:10:33,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:10:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:33,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 03:10:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:10:33,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155597699] [2020-10-14 03:10:33,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:33,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:10:33,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570315862] [2020-10-14 03:10:33,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:10:33,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:10:33,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:10:33,542 INFO L87 Difference]: Start difference. First operand 10143 states and 14060 transitions. Second operand 5 states. [2020-10-14 03:11:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:16,085 INFO L93 Difference]: Finished difference Result 25231 states and 35904 transitions. [2020-10-14 03:11:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:16,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 03:11:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:16,169 INFO L225 Difference]: With dead ends: 25231 [2020-10-14 03:11:16,170 INFO L226 Difference]: Without dead ends: 15094 [2020-10-14 03:11:16,202 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 03:11:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15094 states. [2020-10-14 03:11:16,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15094 to 15044. [2020-10-14 03:11:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15044 states. [2020-10-14 03:11:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15044 states to 15044 states and 20590 transitions. [2020-10-14 03:11:16,603 INFO L78 Accepts]: Start accepts. Automaton has 15044 states and 20590 transitions. Word has length 172 [2020-10-14 03:11:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:16,604 INFO L479 AbstractCegarLoop]: Abstraction has 15044 states and 20590 transitions. [2020-10-14 03:11:16,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15044 states and 20590 transitions. [2020-10-14 03:11:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 03:11:16,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:16,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:16,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:11:16,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:16,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1074994251, now seen corresponding path program 1 times [2020-10-14 03:11:16,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:16,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233934723] [2020-10-14 03:11:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:18,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 03:11:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:11:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-10-14 03:11:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:18,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 03:11:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:11:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:18,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:11:18,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:18,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 03:11:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:11:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:18,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:11:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:11:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:19,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233934723] [2020-10-14 03:11:19,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:11:19,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:11:19,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635718080] [2020-10-14 03:11:19,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:19,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:19,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:19,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:19,017 INFO L87 Difference]: Start difference. First operand 15044 states and 20590 transitions. Second operand 5 states. [2020-10-14 03:11:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:53,182 INFO L93 Difference]: Finished difference Result 44726 states and 63850 transitions. [2020-10-14 03:11:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:11:53,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 03:11:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:53,312 INFO L225 Difference]: With dead ends: 44726 [2020-10-14 03:11:53,313 INFO L226 Difference]: Without dead ends: 29688 [2020-10-14 03:11:53,356 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 03:11:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2020-10-14 03:11:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 29683. [2020-10-14 03:11:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29683 states. [2020-10-14 03:11:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29683 states to 29683 states and 40573 transitions. [2020-10-14 03:11:54,131 INFO L78 Accepts]: Start accepts. Automaton has 29683 states and 40573 transitions. Word has length 190 [2020-10-14 03:11:54,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:54,132 INFO L479 AbstractCegarLoop]: Abstraction has 29683 states and 40573 transitions. [2020-10-14 03:11:54,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:11:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 29683 states and 40573 transitions. [2020-10-14 03:11:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 03:11:54,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:54,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:54,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:11:54,142 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:54,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1961365444, now seen corresponding path program 1 times [2020-10-14 03:11:54,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:54,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469503523] [2020-10-14 03:11:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:56,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:56,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 03:11:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-10-14 03:11:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:56,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 03:11:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:11:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:56,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:56,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:11:56,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:56,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:56,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:56,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:11:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:56,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:56,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:56,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 03:11:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:11:56,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:56,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:11:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:11:56,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469503523] [2020-10-14 03:11:56,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:56,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:11:56,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210669441] [2020-10-14 03:11:56,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:11:56,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:56,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:11:56,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:11:56,617 INFO L87 Difference]: Start difference. First operand 29683 states and 40573 transitions. Second operand 5 states. [2020-10-14 03:12:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:22,717 INFO L93 Difference]: Finished difference Result 85385 states and 119948 transitions. [2020-10-14 03:12:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:12:22,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 03:12:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:22,961 INFO L225 Difference]: With dead ends: 85385 [2020-10-14 03:12:22,961 INFO L226 Difference]: Without dead ends: 55708 [2020-10-14 03:12:23,032 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 03:12:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55708 states. [2020-10-14 03:12:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55708 to 44451. [2020-10-14 03:12:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44451 states. [2020-10-14 03:12:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44451 states to 44451 states and 58184 transitions. [2020-10-14 03:12:24,122 INFO L78 Accepts]: Start accepts. Automaton has 44451 states and 58184 transitions. Word has length 190 [2020-10-14 03:12:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:24,123 INFO L479 AbstractCegarLoop]: Abstraction has 44451 states and 58184 transitions. [2020-10-14 03:12:24,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:12:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 44451 states and 58184 transitions. [2020-10-14 03:12:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 03:12:24,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:24,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:24,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:12:24,136 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash -607446844, now seen corresponding path program 1 times [2020-10-14 03:12:24,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:24,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919154662] [2020-10-14 03:12:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 03:12:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:12:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-14 03:12:25,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 03:12:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:12:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:25,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:25,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:12:25,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:25,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:12:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:25,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:12:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 03:12:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:25,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 03:12:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:12:25,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919154662] [2020-10-14 03:12:25,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:25,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:12:25,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601847747] [2020-10-14 03:12:25,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:12:25,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:25,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:12:25,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:12:25,935 INFO L87 Difference]: Start difference. First operand 44451 states and 58184 transitions. Second operand 5 states.