/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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:37:40,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:37:40,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:37:40,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:37:40,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:37:40,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:37:40,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:37:40,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:37:40,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:37:40,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:37:40,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:37:40,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:37:40,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:37:40,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:37:40,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:37:40,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:37:40,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:37:40,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:37:40,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:37:40,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:37:40,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:37:40,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:37:40,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:37:40,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:37:40,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:37:40,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:37:40,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:37:40,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:37:40,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:37:40,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:37:40,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:37:40,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:37:40,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:37:40,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:37:40,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:37:40,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:37:40,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:37:40,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:37:40,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:37:40,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:37:40,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:37:40,505 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 07:37:40,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:37:40,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:37:40,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:37:40,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:37:40,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:37:40,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:37:40,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:37:40,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:37:40,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:37:40,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:37:40,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:37:40,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:37:40,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:37:40,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:37:40,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:37:40,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:37:40,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:37:40,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:37:40,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:37:40,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:37:40,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:37:40,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:37:40,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:37:40,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:37:40,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:37:40,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:37:40,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:37:40,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:37:40,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:37:40,545 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 07:37:40,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:37:40,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:37:40,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:37:40,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:37:40,856 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:37:40,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-14 07:37:40,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536f17cad/251087f2c3c74779a7f5f15d41f93067/FLAGb984901df [2020-10-14 07:37:41,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:37:41,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-14 07:37:41,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536f17cad/251087f2c3c74779a7f5f15d41f93067/FLAGb984901df [2020-10-14 07:37:41,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536f17cad/251087f2c3c74779a7f5f15d41f93067 [2020-10-14 07:37:41,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:37:41,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:37:41,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:41,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:37:41,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:37:41,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:41" (1/1) ... [2020-10-14 07:37:41,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:41, skipping insertion in model container [2020-10-14 07:37:41,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:41" (1/1) ... [2020-10-14 07:37:41,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:37:41,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:37:42,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:42,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:37:42,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:42,084 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:37:42,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42 WrapperNode [2020-10-14 07:37:42,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:42,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:37:42,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:37:42,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:37:42,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (1/1) ... [2020-10-14 07:37:42,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:37:42,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:37:42,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:37:42,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:37:42,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (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 07:37:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:37:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:37:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-14 07:37:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:37:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:37:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:37:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:37:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:37:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:37:42,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:37:42,582 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:37:42,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:42 BoogieIcfgContainer [2020-10-14 07:37:42,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:37:42,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:37:42,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:37:42,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:37:42,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:37:41" (1/3) ... [2020-10-14 07:37:42,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168653e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:42, skipping insertion in model container [2020-10-14 07:37:42,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:42" (2/3) ... [2020-10-14 07:37:42,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168653e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:42, skipping insertion in model container [2020-10-14 07:37:42,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:42" (3/3) ... [2020-10-14 07:37:42,602 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2020-10-14 07:37:42,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:37:42,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:37:42,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:37:42,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:37:42,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:37:42,686 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:37:42,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:37:42,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:37:42,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:37:42,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:37:42,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:37:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 07:37:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:42,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:42,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:42,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:42,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-14 07:37:42,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:42,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395394534] [2020-10-14 07:37:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-14 07:37:44,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:44,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 07:37:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:37:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:44,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:44,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:37:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:44,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:44,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:37:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:44,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:37:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:44,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:44,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:37:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:44,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:37:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:44,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:44,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:44,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:37:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:44,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:44,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:44,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 07:37:44,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395394534] [2020-10-14 07:37:44,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:44,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 07:37:44,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351428624] [2020-10-14 07:37:44,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:37:44,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:44,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:37:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:37:44,475 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-14 07:37:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:44,603 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2020-10-14 07:37:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:37:44,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:37:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:44,615 INFO L225 Difference]: With dead ends: 58 [2020-10-14 07:37:44,615 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:37:44,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:37:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:37:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 07:37:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:37:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-14 07:37:44,667 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-14 07:37:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:44,668 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-14 07:37:44,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:37:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-14 07:37:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:44,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:44,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:44,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:37:44,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965707, now seen corresponding path program 1 times [2020-10-14 07:37:44,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:44,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995338962] [2020-10-14 07:37:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-10-14 07:37:46,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:37:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:46,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:37:46,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:37:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 07:37:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:46,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995338962] [2020-10-14 07:37:46,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:46,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:46,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880744046] [2020-10-14 07:37:46,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:46,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:46,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:46,263 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-14 07:37:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:46,369 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-14 07:37:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:46,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:37:46,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:46,371 INFO L225 Difference]: With dead ends: 44 [2020-10-14 07:37:46,371 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:37:46,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:37:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:37:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:37:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-14 07:37:46,381 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2020-10-14 07:37:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:46,383 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-14 07:37:46,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-14 07:37:46,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 07:37:46,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:46,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 07:37:46,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:37:46,386 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash 963145065, now seen corresponding path program 1 times [2020-10-14 07:37:46,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:46,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437598114] [2020-10-14 07:37:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:47,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:47,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:37:47,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-14 07:37:47,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:47,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:47,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:37:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:48,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:37:48,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:37:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:37:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:37:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:37:48,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437598114] [2020-10-14 07:37:48,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:48,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:37:48,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437502876] [2020-10-14 07:37:48,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:48,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:48,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:48,086 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-14 07:37:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:48,208 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-10-14 07:37:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:48,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 07:37:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:48,210 INFO L225 Difference]: With dead ends: 53 [2020-10-14 07:37:48,210 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 07:37:48,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 07:37:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-14 07:37:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:37:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 07:37:48,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-14 07:37:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:48,219 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 07:37:48,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 07:37:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 07:37:48,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:48,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 07:37:48,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:37:48,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash -822081532, now seen corresponding path program 1 times [2020-10-14 07:37:48,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:48,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377317620] [2020-10-14 07:37:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 07:37:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:37:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:37:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:53,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 07:37:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:37:53,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:53,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:37:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:37:53,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 07:37:53,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377317620] [2020-10-14 07:37:53,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:53,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:53,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733006014] [2020-10-14 07:37:53,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:53,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:53,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:53,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:53,424 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-14 07:37:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:53,556 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-14 07:37:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:53,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 07:37:53,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:53,559 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:37:53,559 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:37:53,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:37:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:37:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:37:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 07:37:53,576 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2020-10-14 07:37:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:53,576 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 07:37:53,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 07:37:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:37:53,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:53,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 07:37:53,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:37:53,583 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:53,584 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2020-10-14 07:37:53,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:53,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575164649] [2020-10-14 07:37:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:37:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:37:58,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:37:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:58,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:37:58,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:37:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:58,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:37:58,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:37:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:58,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:58,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 07:37:58,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575164649] [2020-10-14 07:37:58,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:58,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:58,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221699038] [2020-10-14 07:37:58,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:58,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:58,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:58,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:58,799 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-14 07:37:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:58,974 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-14 07:37:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:58,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-14 07:37:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:58,977 INFO L225 Difference]: With dead ends: 59 [2020-10-14 07:37:58,977 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:37:58,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:37:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:37:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-14 07:37:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:37:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-14 07:37:59,000 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 48 [2020-10-14 07:37:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:59,001 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-14 07:37:59,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-14 07:37:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:37:59,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:59,006 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 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 07:37:59,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:37:59,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:59,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1201649439, now seen corresponding path program 2 times [2020-10-14 07:37:59,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:59,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266808969] [2020-10-14 07:37:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:38:04,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:38:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:38:04,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:38:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:04,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:38:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:38:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:04,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:04,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:38:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:04,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:38:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:38:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 07:38:04,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266808969] [2020-10-14 07:38:04,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:04,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:04,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490145356] [2020-10-14 07:38:04,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:04,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:04,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:04,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:04,252 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 6 states. [2020-10-14 07:38:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:04,445 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-14 07:38:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:04,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 07:38:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:04,447 INFO L225 Difference]: With dead ends: 67 [2020-10-14 07:38:04,447 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:04,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-14 07:38:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:38:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-14 07:38:04,461 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 60 [2020-10-14 07:38:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:04,463 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-14 07:38:04,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-14 07:38:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 07:38:04,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:04,466 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 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 07:38:04,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:38:04,466 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1350889340, now seen corresponding path program 3 times [2020-10-14 07:38:04,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:04,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997984694] [2020-10-14 07:38:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 07:38:09,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:38:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:38:09,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:38:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:09,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:09,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:38:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:09,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:09,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:38:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:09,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:09,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:38:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:38:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 07:38:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:09,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997984694] [2020-10-14 07:38:09,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:09,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:09,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134902384] [2020-10-14 07:38:09,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:09,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:09,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:09,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:09,718 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2020-10-14 07:38:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:09,867 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-14 07:38:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:09,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 07:38:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:09,869 INFO L225 Difference]: With dead ends: 72 [2020-10-14 07:38:09,869 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:09,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:38:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:38:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 07:38:09,885 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 72 [2020-10-14 07:38:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:09,888 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 07:38:09,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 07:38:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 07:38:09,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:09,894 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 2, 2, 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 07:38:09,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:38:09,895 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash -74716482, now seen corresponding path program 4 times [2020-10-14 07:38:09,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:09,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795848270] [2020-10-14 07:38:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 07:38:14,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:14,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:14,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:15,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:38:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:15,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:15,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:38:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:15,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:15,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:15,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:15,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:15,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795848270] [2020-10-14 07:38:15,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:15,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:15,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472036375] [2020-10-14 07:38:15,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:15,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:15,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:15,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:15,144 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2020-10-14 07:38:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:15,243 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-14 07:38:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:15,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-14 07:38:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:15,247 INFO L225 Difference]: With dead ends: 74 [2020-10-14 07:38:15,247 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:38:15,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:38:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:38:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:38:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-14 07:38:15,261 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 74 [2020-10-14 07:38:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:15,262 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-14 07:38:15,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-14 07:38:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:38:15,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:15,263 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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 07:38:15,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:38:15,264 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash 12656000, now seen corresponding path program 5 times [2020-10-14 07:38:15,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:15,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541856043] [2020-10-14 07:38:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:38:20,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:38:20,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:38:20,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:38:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:20,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:20,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:38:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:20,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 07:38:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:38:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-14 07:38:20,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541856043] [2020-10-14 07:38:20,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:20,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:20,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058387585] [2020-10-14 07:38:20,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:20,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:20,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:20,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:20,468 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-14 07:38:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:20,554 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-14 07:38:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:20,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-14 07:38:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:20,556 INFO L225 Difference]: With dead ends: 69 [2020-10-14 07:38:20,556 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:38:20,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:38:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:38:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:38:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-14 07:38:20,567 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-14 07:38:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:20,569 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-14 07:38:20,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-14 07:38:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 07:38:20,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:20,571 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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 07:38:20,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:38:20,571 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1164255198, now seen corresponding path program 6 times [2020-10-14 07:38:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:20,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515532871] [2020-10-14 07:38:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 07:38:25,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:38:25,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:38:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:25,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:25,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:38:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:38:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 07:38:25,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515532871] [2020-10-14 07:38:25,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:25,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:25,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967621168] [2020-10-14 07:38:25,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:25,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:25,794 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2020-10-14 07:38:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:25,960 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-10-14 07:38:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:25,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-14 07:38:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:25,962 INFO L225 Difference]: With dead ends: 83 [2020-10-14 07:38:25,962 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:25,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:38:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-14 07:38:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:38:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 07:38:25,972 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 78 [2020-10-14 07:38:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:25,973 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 07:38:25,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 07:38:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 07:38:25,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:25,978 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 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 07:38:25,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:38:25,978 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash 276420857, now seen corresponding path program 7 times [2020-10-14 07:38:25,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:25,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101860073] [2020-10-14 07:38:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 07:38:31,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:31,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 07:38:31,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:31,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:38:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:31,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:31,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2020-10-14 07:38:31,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101860073] [2020-10-14 07:38:31,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:31,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:31,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364167820] [2020-10-14 07:38:31,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:31,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:31,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:31,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:31,250 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2020-10-14 07:38:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:31,337 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-10-14 07:38:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:31,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-14 07:38:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:31,339 INFO L225 Difference]: With dead ends: 88 [2020-10-14 07:38:31,339 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:31,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:38:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:38:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-14 07:38:31,344 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 90 [2020-10-14 07:38:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:31,344 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-14 07:38:31,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-14 07:38:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 07:38:31,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:31,345 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 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 07:38:31,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:38:31,345 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1506101179, now seen corresponding path program 8 times [2020-10-14 07:38:31,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:31,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294347771] [2020-10-14 07:38:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:36,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:36,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:36,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:38:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:36,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:36,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 07:38:36,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294347771] [2020-10-14 07:38:36,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:36,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:36,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130981365] [2020-10-14 07:38:36,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:36,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:36,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:36,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:36,532 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 6 states. [2020-10-14 07:38:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:36,629 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-14 07:38:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:36,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-14 07:38:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:36,631 INFO L225 Difference]: With dead ends: 81 [2020-10-14 07:38:36,631 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:38:36,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:38:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:38:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:38:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 07:38:36,637 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 92 [2020-10-14 07:38:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:36,638 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 07:38:36,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 07:38:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:38:36,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:36,639 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:36,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:38:36,639 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1361671399, now seen corresponding path program 9 times [2020-10-14 07:38:36,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:36,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75822416] [2020-10-14 07:38:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:38:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:38:41,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:38:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:38:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:41,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:41,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:41,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:38:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:38:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:38:41,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 07:38:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:38:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 76 proven. 104 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-14 07:38:41,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75822416] [2020-10-14 07:38:41,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:41,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:41,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875775733] [2020-10-14 07:38:41,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:41,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:41,888 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 8 states. [2020-10-14 07:38:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:42,083 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2020-10-14 07:38:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:42,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-14 07:38:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:42,085 INFO L225 Difference]: With dead ends: 94 [2020-10-14 07:38:42,085 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 07:38:42,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:38:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 07:38:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-14 07:38:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:38:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 07:38:42,091 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 94 [2020-10-14 07:38:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:42,092 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 07:38:42,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 07:38:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:38:42,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:42,093 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:42,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:38:42,093 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1557009996, now seen corresponding path program 10 times [2020-10-14 07:38:42,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:42,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015487445] [2020-10-14 07:38:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:38:47,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:38:47,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:47,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:47,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:47,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:47,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:47,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:38:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:38:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:47,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:38:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:38:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:38:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:47,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:38:47,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:47,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2020-10-14 07:38:47,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015487445] [2020-10-14 07:38:47,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:47,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:47,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754874175] [2020-10-14 07:38:47,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:47,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:47,255 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-14 07:38:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:47,350 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-10-14 07:38:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:47,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-14 07:38:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:47,352 INFO L225 Difference]: With dead ends: 101 [2020-10-14 07:38:47,352 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 07:38:47,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 07:38:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 07:38:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:38:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-14 07:38:47,368 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2020-10-14 07:38:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:47,369 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-14 07:38:47,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-14 07:38:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 07:38:47,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:47,371 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:47,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:38:47,372 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:47,373 INFO L82 PathProgramCache]: Analyzing trace with hash 345740406, now seen corresponding path program 11 times [2020-10-14 07:38:47,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:47,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484574454] [2020-10-14 07:38:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:49,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 07:38:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 07:38:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:38:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 07:38:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:38:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:52,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:38:52,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:52,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:52,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:38:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 07:38:52,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:38:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:52,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:38:52,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:38:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-14 07:38:52,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484574454] [2020-10-14 07:38:52,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:52,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:52,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951464498] [2020-10-14 07:38:52,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:52,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:52,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:52,519 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 7 states. [2020-10-14 07:38:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:52,607 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2020-10-14 07:38:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:52,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 07:38:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:52,608 INFO L225 Difference]: With dead ends: 92 [2020-10-14 07:38:52,609 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 07:38:52,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 07:38:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-14 07:38:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:38:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-14 07:38:52,624 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2020-10-14 07:38:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:52,625 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-14 07:38:52,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-14 07:38:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:38:52,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:52,629 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:52,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:38:52,630 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1065117484, now seen corresponding path program 12 times [2020-10-14 07:38:52,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:52,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216832669] [2020-10-14 07:38:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 07:38:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:38:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 07:38:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:57,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:57,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:38:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:38:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:38:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:58,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:38:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 07:38:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:38:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:58,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:58,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:38:58,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:38:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:58,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:38:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-14 07:38:58,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216832669] [2020-10-14 07:38:58,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:58,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:38:58,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679342507] [2020-10-14 07:38:58,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:38:58,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:58,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:38:58,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:38:58,283 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 11 states. [2020-10-14 07:38:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:58,724 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2020-10-14 07:38:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:38:58,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-14 07:38:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:58,726 INFO L225 Difference]: With dead ends: 135 [2020-10-14 07:38:58,726 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:38:58,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:38:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:38:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-14 07:38:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:38:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2020-10-14 07:38:58,737 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 110 [2020-10-14 07:38:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:58,737 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2020-10-14 07:38:58,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:38:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2020-10-14 07:38:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:38:58,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:58,739 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:38:58,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:38:58,739 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:58,740 INFO L82 PathProgramCache]: Analyzing trace with hash -504417706, now seen corresponding path program 1 times [2020-10-14 07:38:58,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:58,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377965199] [2020-10-14 07:38:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 07:39:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:04,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:04,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:04,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:04,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 07:39:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:04,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:39:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:39:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:39:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:05,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:39:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 07:39:05,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:05,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:05,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:39:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:39:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:39:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:06,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:06,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 07:39:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 42 proven. 438 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 07:39:07,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377965199] [2020-10-14 07:39:07,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:07,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 07:39:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20382986] [2020-10-14 07:39:07,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 07:39:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 07:39:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1855, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 07:39:07,554 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand 46 states. [2020-10-14 07:39:10,240 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-14 07:39:11,534 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-14 07:39:12,586 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-10-14 07:39:12,785 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-14 07:39:12,946 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-14 07:39:13,134 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-14 07:39:13,406 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-10-14 07:39:13,625 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-14 07:39:15,002 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-14 07:39:15,206 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2020-10-14 07:39:15,692 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-14 07:39:16,047 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-14 07:39:16,281 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-14 07:39:17,039 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-14 07:39:17,872 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-14 07:39:18,985 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2020-10-14 07:39:19,208 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-14 07:39:19,522 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-14 07:39:19,780 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-14 07:39:21,792 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-14 07:39:22,126 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-14 07:39:24,938 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-14 07:39:25,219 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-14 07:39:25,533 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-14 07:39:25,859 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-14 07:39:26,232 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-14 07:39:26,448 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-10-14 07:39:26,646 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-10-14 07:39:27,197 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-10-14 07:39:27,374 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-14 07:39:28,377 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-14 07:39:28,712 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-14 07:39:29,200 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-14 07:39:30,770 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-10-14 07:39:30,961 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-14 07:39:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:32,065 INFO L93 Difference]: Finished difference Result 543 states and 751 transitions. [2020-10-14 07:39:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2020-10-14 07:39:32,067 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2020-10-14 07:39:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:32,078 INFO L225 Difference]: With dead ends: 543 [2020-10-14 07:39:32,078 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 07:39:32,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18010 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=4958, Invalid=44548, Unknown=0, NotChecked=0, Total=49506 [2020-10-14 07:39:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 07:39:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 303. [2020-10-14 07:39:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-14 07:39:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 408 transitions. [2020-10-14 07:39:32,167 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 408 transitions. Word has length 110 [2020-10-14 07:39:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:32,168 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 408 transitions. [2020-10-14 07:39:32,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 07:39:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 408 transitions. [2020-10-14 07:39:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:39:32,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:32,172 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:39:32,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:39:32,173 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash -897444716, now seen corresponding path program 2 times [2020-10-14 07:39:32,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:32,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975660241] [2020-10-14 07:39:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:33,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:39:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:39:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 07:39:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:37,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 07:39:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:39:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 07:39:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:37,649 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-14 07:39:37,808 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-14 07:39:38,041 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-14 07:39:38,352 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-14 07:39:38,745 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-14 07:39:39,115 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-14 07:39:39,318 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-14 07:39:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:39,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:39,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:39,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:39,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:39,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:39,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:39:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:40,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-14 07:39:40,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:39:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:39:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 07:39:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:41,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:39:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:39:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:43,920 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-14 07:39:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:39:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:44,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-14 07:39:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:44,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:39:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:39:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1