/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:24:14,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:24:14,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:24:14,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:24:14,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:24:14,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:24:14,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:24:14,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:24:14,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:24:14,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:24:14,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:24:14,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:24:14,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:24:14,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:24:14,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:24:14,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:24:14,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:24:14,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:24:14,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:24:14,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:24:14,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:24:14,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:24:14,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:24:14,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:24:14,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:24:14,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:24:14,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:24:14,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:24:14,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:24:14,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:24:14,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:24:14,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:24:14,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:24:14,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:24:14,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:24:14,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:24:14,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:24:14,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:24:14,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:24:14,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:24:14,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:24:14,633 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 04:24:14,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:24:14,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:24:14,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:24:14,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:24:14,679 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:24:14,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:24:14,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:24:14,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:24:14,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:24:14,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:24:14,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:24:14,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:24:14,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:24:14,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:24:14,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:24:14,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:24:14,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:24:14,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:24:14,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:24:14,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:24:14,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:24:14,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:24:14,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:24:14,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:24:14,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:24:14,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:24:14,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:24:14,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:24:14,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:24:14,685 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 04:24:14,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:24:14,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:24:14,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:24:14,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:24:14,983 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:24:14,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-14 04:24:15,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963566b65/2b510cf9c78c44cdbbb034aef13cfe64/FLAG3fe5aaaa1 [2020-10-14 04:24:15,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:24:15,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-14 04:24:15,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963566b65/2b510cf9c78c44cdbbb034aef13cfe64/FLAG3fe5aaaa1 [2020-10-14 04:24:16,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/963566b65/2b510cf9c78c44cdbbb034aef13cfe64 [2020-10-14 04:24:16,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:24:16,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:24:16,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:24:16,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:24:16,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:24:16,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:24:16" (1/1) ... [2020-10-14 04:24:16,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76095f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:16, skipping insertion in model container [2020-10-14 04:24:16,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:24:16" (1/1) ... [2020-10-14 04:24:16,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:24:16,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:24:17,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:24:17,583 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:24:18,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:24:18,168 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:24:18,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18 WrapperNode [2020-10-14 04:24:18,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:24:18,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:24:18,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:24:18,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:24:18,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (1/1) ... [2020-10-14 04:24:18,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:24:18,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:24:18,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:24:18,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:24:18,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (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 04:24:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:24:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:24:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:24:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:24:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:24:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:24:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:24:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:24:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:24:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:24:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:24:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:24:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:24:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:24:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:24:24,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:24:24,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:24:24,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:24:24 BoogieIcfgContainer [2020-10-14 04:24:24,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:24:24,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:24:24,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:24:24,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:24:24,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:24:16" (1/3) ... [2020-10-14 04:24:24,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4118ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:24:24, skipping insertion in model container [2020-10-14 04:24:24,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:24:18" (2/3) ... [2020-10-14 04:24:24,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4118ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:24:24, skipping insertion in model container [2020-10-14 04:24:24,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:24:24" (3/3) ... [2020-10-14 04:24:24,118 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label56.c [2020-10-14 04:24:24,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:24:24,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:24:24,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:24:24,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:24:24,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:24:24,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:24:24,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:24:24,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:24:24,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:24:24,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:24:24,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:24:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:24:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:24:24,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:24,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:24:24,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash -447969511, now seen corresponding path program 1 times [2020-10-14 04:24:24,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:24,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547703210] [2020-10-14 04:24:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:24,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:24,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:24:24,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 04:24:24,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:24,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:24:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:24:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:24:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:24:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:24:24,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:24,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:24:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:24:24,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547703210] [2020-10-14 04:24:24,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:24:24,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:24:24,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074460337] [2020-10-14 04:24:24,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:24:24,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:24,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:24:24,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:24:24,980 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-14 04:24:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:37,532 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2020-10-14 04:24:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:24:37,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 04:24:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:37,574 INFO L225 Difference]: With dead ends: 2984 [2020-10-14 04:24:37,575 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:24:37,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:24:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:24:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2020-10-14 04:24:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-10-14 04:24:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2020-10-14 04:24:37,750 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 54 [2020-10-14 04:24:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:37,752 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2020-10-14 04:24:37,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:24:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2020-10-14 04:24:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 04:24:37,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:37,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:37,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:24:37,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1924142128, now seen corresponding path program 1 times [2020-10-14 04:24:37,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:37,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676537402] [2020-10-14 04:24:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 04:24:39,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:24:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-14 04:24:39,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:39,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:39,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:24:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:24:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:24:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:39,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:24:39,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:24:39,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:39,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:24:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:24:39,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676537402] [2020-10-14 04:24:39,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:24:39,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:24:39,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833030969] [2020-10-14 04:24:39,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:24:39,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:24:39,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:24:39,469 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 5 states. [2020-10-14 04:24:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:47,533 INFO L93 Difference]: Finished difference Result 6409 states and 10805 transitions. [2020-10-14 04:24:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:24:47,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 04:24:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:47,564 INFO L225 Difference]: With dead ends: 6409 [2020-10-14 04:24:47,564 INFO L226 Difference]: Without dead ends: 4280 [2020-10-14 04:24:47,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:24:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-14 04:24:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4276. [2020-10-14 04:24:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-14 04:24:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 6381 transitions. [2020-10-14 04:24:47,682 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 6381 transitions. Word has length 142 [2020-10-14 04:24:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:47,684 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 6381 transitions. [2020-10-14 04:24:47,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:24:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 6381 transitions. [2020-10-14 04:24:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 04:24:47,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:47,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:47,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:24:47,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash -853095368, now seen corresponding path program 1 times [2020-10-14 04:24:47,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:47,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693249888] [2020-10-14 04:24:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:48,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:48,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 04:24:48,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:24:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 04:24:48,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:48,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:24:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 04:24:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 04:24:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:24:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:48,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:48,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:24:48,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:24:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:48,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:24:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:24:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:24:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:48,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:24:48,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:24:48,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:24:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:24:48,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:24:48,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:24:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:24:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:24:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:24:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:24:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:24:49,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693249888] [2020-10-14 04:24:49,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:24:49,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:24:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510799388] [2020-10-14 04:24:49,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:24:49,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:24:49,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:24:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:24:49,012 INFO L87 Difference]: Start difference. First operand 4276 states and 6381 transitions. Second operand 5 states. [2020-10-14 04:24:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:56,251 INFO L93 Difference]: Finished difference Result 10684 states and 16503 transitions. [2020-10-14 04:24:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:24:56,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-14 04:24:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:56,281 INFO L225 Difference]: With dead ends: 10684 [2020-10-14 04:24:56,282 INFO L226 Difference]: Without dead ends: 6414 [2020-10-14 04:24:56,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:24:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2020-10-14 04:24:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 6410. [2020-10-14 04:24:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6410 states. [2020-10-14 04:24:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 9494 transitions. [2020-10-14 04:24:56,440 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 9494 transitions. Word has length 186 [2020-10-14 04:24:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:56,441 INFO L479 AbstractCegarLoop]: Abstraction has 6410 states and 9494 transitions. [2020-10-14 04:24:56,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:24:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 9494 transitions. [2020-10-14 04:24:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 04:24:56,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:56,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:24:56,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:24:56,448 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:56,449 INFO L82 PathProgramCache]: Analyzing trace with hash -698472186, now seen corresponding path program 1 times [2020-10-14 04:24:56,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:56,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243258752] [2020-10-14 04:24:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:01,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:01,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 04:25:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:25:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4899 [2020-10-14 04:25:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:01,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:25:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 04:25:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:25:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:01,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:01,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:01,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:25:01,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:01,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:01,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:25:01,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:25:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:01,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:01,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:25:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:25:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:01,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:25:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 04:25:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:25:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 04:25:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:01,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:25:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 04:25:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:25:01,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243258752] [2020-10-14 04:25:01,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:25:01,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:25:01,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312776998] [2020-10-14 04:25:01,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:25:01,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:01,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:25:01,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:25:01,824 INFO L87 Difference]: Start difference. First operand 6410 states and 9494 transitions. Second operand 8 states. [2020-10-14 04:25:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:25:13,729 INFO L93 Difference]: Finished difference Result 25053 states and 38174 transitions. [2020-10-14 04:25:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:25:13,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 251 [2020-10-14 04:25:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:25:13,801 INFO L225 Difference]: With dead ends: 25053 [2020-10-14 04:25:13,801 INFO L226 Difference]: Without dead ends: 18649 [2020-10-14 04:25:13,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:25:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18649 states. [2020-10-14 04:25:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18649 to 15112. [2020-10-14 04:25:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15112 states. [2020-10-14 04:25:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15112 states to 15112 states and 21603 transitions. [2020-10-14 04:25:14,378 INFO L78 Accepts]: Start accepts. Automaton has 15112 states and 21603 transitions. Word has length 251 [2020-10-14 04:25:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:25:14,378 INFO L479 AbstractCegarLoop]: Abstraction has 15112 states and 21603 transitions. [2020-10-14 04:25:14,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:25:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 15112 states and 21603 transitions. [2020-10-14 04:25:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 04:25:14,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:14,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:25:14,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:25:14,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 762083876, now seen corresponding path program 1 times [2020-10-14 04:25:14,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:14,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387963139] [2020-10-14 04:25:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:19,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 04:25:19,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:25:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 04:25:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:19,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:25:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:25:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:19,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:19,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:25:19,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:19,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:25:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:19,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:25:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:19,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:25:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:19,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:25:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:25:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:19,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:19,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:25:19,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:25:19,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:19,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:25:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:25:19,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 04:25:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:19,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:25:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:25:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:19,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 04:25:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 214 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:25:19,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387963139] [2020-10-14 04:25:19,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:25:19,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:25:19,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024117895] [2020-10-14 04:25:19,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:25:19,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:25:19,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:25:19,874 INFO L87 Difference]: Start difference. First operand 15112 states and 21603 transitions. Second operand 7 states. [2020-10-14 04:25:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:25:30,393 INFO L93 Difference]: Finished difference Result 34984 states and 53357 transitions. [2020-10-14 04:25:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:25:30,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-14 04:25:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:25:30,483 INFO L225 Difference]: With dead ends: 34984 [2020-10-14 04:25:30,483 INFO L226 Difference]: Without dead ends: 19878 [2020-10-14 04:25:30,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:25:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2020-10-14 04:25:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 19703. [2020-10-14 04:25:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19703 states. [2020-10-14 04:25:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19703 states to 19703 states and 28577 transitions. [2020-10-14 04:25:31,142 INFO L78 Accepts]: Start accepts. Automaton has 19703 states and 28577 transitions. Word has length 326 [2020-10-14 04:25:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:25:31,143 INFO L479 AbstractCegarLoop]: Abstraction has 19703 states and 28577 transitions. [2020-10-14 04:25:31,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:25:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 19703 states and 28577 transitions. [2020-10-14 04:25:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 04:25:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:31,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:25:31,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:25:31,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:31,159 INFO L82 PathProgramCache]: Analyzing trace with hash -329358463, now seen corresponding path program 1 times [2020-10-14 04:25:31,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:31,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417321171] [2020-10-14 04:25:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:32,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 04:25:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:25:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 04:25:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:36,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:25:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:25:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:25:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:36,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:25:36,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:36,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:25:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:36,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:25:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:25:36,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:36,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:25:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 04:25:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:25:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:25:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:25:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:25:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:25:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 04:25:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:36,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:36,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:25:36,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 04:25:36,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:36,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 04:25:36,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:25:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 215 proven. 72 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:25:36,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417321171] [2020-10-14 04:25:36,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:25:36,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:25:36,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990499771] [2020-10-14 04:25:36,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:25:36,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:36,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:25:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:25:36,782 INFO L87 Difference]: Start difference. First operand 19703 states and 28577 transitions. Second operand 7 states. [2020-10-14 04:25:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:25:50,608 INFO L93 Difference]: Finished difference Result 57000 states and 90394 transitions. [2020-10-14 04:25:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:25:50,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-14 04:25:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:25:50,802 INFO L225 Difference]: With dead ends: 57000 [2020-10-14 04:25:50,802 INFO L226 Difference]: Without dead ends: 37303 [2020-10-14 04:25:50,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:25:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37303 states. [2020-10-14 04:25:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37303 to 37004. [2020-10-14 04:25:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37004 states. [2020-10-14 04:25:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37004 states to 37004 states and 53919 transitions. [2020-10-14 04:25:51,777 INFO L78 Accepts]: Start accepts. Automaton has 37004 states and 53919 transitions. Word has length 343 [2020-10-14 04:25:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:25:51,777 INFO L479 AbstractCegarLoop]: Abstraction has 37004 states and 53919 transitions. [2020-10-14 04:25:51,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:25:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37004 states and 53919 transitions. [2020-10-14 04:25:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-14 04:25:51,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:25:51,797 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:25:51,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:25:51,798 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:25:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:25:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash -20586348, now seen corresponding path program 1 times [2020-10-14 04:25:51,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:25:51,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32734441] [2020-10-14 04:25:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:25:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:55,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:55,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 04:25:55,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:25:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-14 04:25:55,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:55,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:25:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 04:25:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:25:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:56,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:25:56,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:25:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:56,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:25:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:56,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:25:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:25:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:25:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:56,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:56,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:25:56,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:25:56,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:56,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:25:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:25:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:25:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:25:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 04:25:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:25:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:25:56,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:25:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:25:56,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:25:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 04:25:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:25:56,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:25:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:25:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:25:56,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-14 04:25:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:25:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:25:56,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32734441] [2020-10-14 04:25:56,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:25:56,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:25:56,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942913678] [2020-10-14 04:25:56,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:25:56,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:25:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:25:56,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:25:56,640 INFO L87 Difference]: Start difference. First operand 37004 states and 53919 transitions. Second operand 7 states. [2020-10-14 04:26:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:07,240 INFO L93 Difference]: Finished difference Result 92640 states and 141356 transitions. [2020-10-14 04:26:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:26:07,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-14 04:26:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:07,466 INFO L225 Difference]: With dead ends: 92640 [2020-10-14 04:26:07,466 INFO L226 Difference]: Without dead ends: 57064 [2020-10-14 04:26:07,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:26:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57064 states. [2020-10-14 04:26:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57064 to 56962. [2020-10-14 04:26:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56962 states. [2020-10-14 04:26:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56962 states to 56962 states and 81411 transitions. [2020-10-14 04:26:08,676 INFO L78 Accepts]: Start accepts. Automaton has 56962 states and 81411 transitions. Word has length 351 [2020-10-14 04:26:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:08,677 INFO L479 AbstractCegarLoop]: Abstraction has 56962 states and 81411 transitions. [2020-10-14 04:26:08,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:26:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 56962 states and 81411 transitions. [2020-10-14 04:26:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-14 04:26:08,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:08,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:08,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:26:08,713 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:08,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1188050016, now seen corresponding path program 1 times [2020-10-14 04:26:08,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:08,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205619218] [2020-10-14 04:26:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-14 04:26:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:26:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:13,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:13,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:13,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:13,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:13,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:13,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:13,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:26:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:13,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:26:13,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:26:13,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:26:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-14 04:26:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:26:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 04:26:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:26:14,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205619218] [2020-10-14 04:26:14,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:26:14,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:26:14,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441740795] [2020-10-14 04:26:14,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:26:14,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:26:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:26:14,423 INFO L87 Difference]: Start difference. First operand 56962 states and 81411 transitions. Second operand 7 states. [2020-10-14 04:26:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:31,325 INFO L93 Difference]: Finished difference Result 127321 states and 196995 transitions. [2020-10-14 04:26:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:26:31,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-14 04:26:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:31,628 INFO L225 Difference]: With dead ends: 127321 [2020-10-14 04:26:31,628 INFO L226 Difference]: Without dead ends: 71787 [2020-10-14 04:26:31,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:26:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71787 states. [2020-10-14 04:26:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71787 to 70647. [2020-10-14 04:26:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70647 states. [2020-10-14 04:26:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70647 states to 70647 states and 99358 transitions. [2020-10-14 04:26:33,402 INFO L78 Accepts]: Start accepts. Automaton has 70647 states and 99358 transitions. Word has length 408 [2020-10-14 04:26:33,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:33,405 INFO L479 AbstractCegarLoop]: Abstraction has 70647 states and 99358 transitions. [2020-10-14 04:26:33,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:26:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 70647 states and 99358 transitions. [2020-10-14 04:26:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-14 04:26:33,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:33,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:33,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:26:33,431 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1709150108, now seen corresponding path program 1 times [2020-10-14 04:26:33,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:33,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382866448] [2020-10-14 04:26:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-14 04:26:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:26:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:38,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:26:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:38,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 04:26:38,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:26:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:38,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 04:26:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-14 04:26:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:38,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:38,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:26:38,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 04:26:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:38,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:26:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 04:26:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:26:39,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382866448] [2020-10-14 04:26:39,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:26:39,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:26:39,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278594969] [2020-10-14 04:26:39,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:26:39,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:39,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:26:39,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:26:39,174 INFO L87 Difference]: Start difference. First operand 70647 states and 99358 transitions. Second operand 7 states. [2020-10-14 04:26:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:26:50,982 INFO L93 Difference]: Finished difference Result 149175 states and 208848 transitions. [2020-10-14 04:26:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:26:50,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-14 04:26:50,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:26:51,472 INFO L225 Difference]: With dead ends: 149175 [2020-10-14 04:26:51,473 INFO L226 Difference]: Without dead ends: 79956 [2020-10-14 04:26:51,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:26:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79956 states. [2020-10-14 04:26:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79956 to 72142. [2020-10-14 04:26:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72142 states. [2020-10-14 04:26:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72142 states to 72142 states and 97654 transitions. [2020-10-14 04:26:52,690 INFO L78 Accepts]: Start accepts. Automaton has 72142 states and 97654 transitions. Word has length 422 [2020-10-14 04:26:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:26:52,692 INFO L479 AbstractCegarLoop]: Abstraction has 72142 states and 97654 transitions. [2020-10-14 04:26:52,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:26:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 72142 states and 97654 transitions. [2020-10-14 04:26:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-14 04:26:52,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:52,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:52,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:26:52,721 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:52,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1407802527, now seen corresponding path program 1 times [2020-10-14 04:26:52,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:52,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302605162] [2020-10-14 04:26:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-14 04:26:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:26:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 04:26:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:57,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:26:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 04:26:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:26:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:26:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:26:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:26:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:58,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:26:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:26:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 04:26:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-14 04:26:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:58,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:26:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 04:26:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:26:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:26:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 214 proven. 158 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:26:58,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302605162] [2020-10-14 04:26:58,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:26:58,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:26:58,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196160484] [2020-10-14 04:26:58,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:26:58,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:58,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:26:58,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:26:58,498 INFO L87 Difference]: Start difference. First operand 72142 states and 97654 transitions. Second operand 7 states. [2020-10-14 04:27:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:15,707 INFO L93 Difference]: Finished difference Result 155490 states and 218575 transitions. [2020-10-14 04:27:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:27:15,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-14 04:27:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:15,961 INFO L225 Difference]: With dead ends: 155490 [2020-10-14 04:27:15,961 INFO L226 Difference]: Without dead ends: 83362 [2020-10-14 04:27:16,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:27:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83362 states. [2020-10-14 04:27:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83362 to 81457. [2020-10-14 04:27:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81457 states. [2020-10-14 04:27:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81457 states to 81457 states and 109380 transitions. [2020-10-14 04:27:17,581 INFO L78 Accepts]: Start accepts. Automaton has 81457 states and 109380 transitions. Word has length 459 [2020-10-14 04:27:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:17,582 INFO L479 AbstractCegarLoop]: Abstraction has 81457 states and 109380 transitions. [2020-10-14 04:27:17,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:27:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 81457 states and 109380 transitions. [2020-10-14 04:27:17,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 04:27:17,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:17,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:27:17,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:27:17,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:17,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1449529535, now seen corresponding path program 1 times [2020-10-14 04:27:17,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:17,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733658375] [2020-10-14 04:27:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:22,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4950 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 04:27:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:22,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:22,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:22,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:22,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:27:22,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:27:22,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:22,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 04:27:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 04:27:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 04:27:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:22,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-14 04:27:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:27:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:23,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:23,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:27:23,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:27:23,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:27:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:27:24,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733658375] [2020-10-14 04:27:24,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:27:24,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:27:24,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575900056] [2020-10-14 04:27:24,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:27:24,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:27:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:27:24,947 INFO L87 Difference]: Start difference. First operand 81457 states and 109380 transitions. Second operand 6 states. [2020-10-14 04:27:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:38,159 INFO L93 Difference]: Finished difference Result 159403 states and 214911 transitions. [2020-10-14 04:27:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:27:38,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 488 [2020-10-14 04:27:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:38,163 INFO L225 Difference]: With dead ends: 159403 [2020-10-14 04:27:38,163 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 04:27:38,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:27:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 04:27:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 04:27:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 04:27:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 04:27:38,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 488 [2020-10-14 04:27:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:38,293 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 04:27:38,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:27:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 04:27:38,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 04:27:38,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:27:38,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 04:27:43,188 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 966 DAG size of output: 392 [2020-10-14 04:27:45,844 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 966 DAG size of output: 392 [2020-10-14 04:27:47,575 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 390 DAG size of output: 30 [2020-10-14 04:27:48,794 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 390 DAG size of output: 30 [2020-10-14 04:27:49,955 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 390 DAG size of output: 30 [2020-10-14 04:27:53,336 WARN L193 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 387 DAG size of output: 28 [2020-10-14 04:27:54,503 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 390 DAG size of output: 30