/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:39:33,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:39:33,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:39:33,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:39:33,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:39:33,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:39:33,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:39:33,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:39:33,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:39:33,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:39:33,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:39:33,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:39:33,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:39:33,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:39:33,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:39:33,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:39:33,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:39:33,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:39:33,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:39:33,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:39:33,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:39:33,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:39:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:39:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:39:33,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:39:33,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:39:33,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:39:33,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:39:33,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:39:33,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:39:33,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:39:33,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:39:33,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:39:33,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:39:33,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:39:33,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:39:33,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:39:33,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:39:33,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:39:33,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:39:33,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:39:33,654 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 17:39:33,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:39:33,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:39:33,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:39:33,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:39:33,679 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:39:33,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:39:33,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:39:33,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:39:33,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:39:33,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:39:33,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:39:33,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:39:33,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:39:33,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:39:33,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:39:33,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:39:33,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:39:33,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:39:33,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:39:33,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:39:33,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:39:33,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:39:33,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:39:33,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:39:33,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:39:33,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:39:33,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:39:33,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:39:33,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:39:33,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:39:34,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:39:34,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:39:34,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:39:34,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:39:34,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:39:34,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-14 17:39:34,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1124d43e8/c7af6378a2574fdfb1c7b2c8ff715227/FLAG483ac5ad4 [2020-10-14 17:39:34,569 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:39:34,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-14 17:39:34,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1124d43e8/c7af6378a2574fdfb1c7b2c8ff715227/FLAG483ac5ad4 [2020-10-14 17:39:34,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1124d43e8/c7af6378a2574fdfb1c7b2c8ff715227 [2020-10-14 17:39:35,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:39:35,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:39:35,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:35,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:39:35,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:39:35,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:34" (1/1) ... [2020-10-14 17:39:35,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dadf5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35, skipping insertion in model container [2020-10-14 17:39:35,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:34" (1/1) ... [2020-10-14 17:39:35,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:39:35,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:39:35,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:35,224 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:39:35,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:35,264 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:39:35,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35 WrapperNode [2020-10-14 17:39:35,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:35,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:39:35,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:39:35,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:39:35,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (1/1) ... [2020-10-14 17:39:35,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:39:35,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:39:35,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:39:35,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:39:35,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (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 17:39:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:39:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:39:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-14 17:39:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:39:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:39:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:39:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:39:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:39:35,722 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:39:35,722 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:39:35,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:35 BoogieIcfgContainer [2020-10-14 17:39:35,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:39:35,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:39:35,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:39:35,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:39:35,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:39:34" (1/3) ... [2020-10-14 17:39:35,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7b736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:35, skipping insertion in model container [2020-10-14 17:39:35,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:35" (2/3) ... [2020-10-14 17:39:35,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7b736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:35, skipping insertion in model container [2020-10-14 17:39:35,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:35" (3/3) ... [2020-10-14 17:39:35,737 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2020-10-14 17:39:35,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:39:35,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:39:35,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:39:35,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:39:35,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:39:35,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:39:35,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:39:35,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:39:35,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:39:35,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:39:35,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:39:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 17:39:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:39:35,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:35,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:35,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:35,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2020-10-14 17:39:35,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:35,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012001755] [2020-10-14 17:39:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:37,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:39:37,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:39:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-14 17:39:37,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:37,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:39:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:39:38,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:38,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:38,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:39:38,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:38,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:39:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:38,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:38,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:39:38,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:38,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:38,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:39:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:38,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 17:39:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:38,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:39:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:38,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:39:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:39:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:38,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:38,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:39:38,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:38,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:38,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:38,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:38,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:38,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 17:39:38,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012001755] [2020-10-14 17:39:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:38,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:39:38,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421264724] [2020-10-14 17:39:38,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:39:38,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:38,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:39:38,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:39:38,219 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2020-10-14 17:39:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:38,542 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-10-14 17:39:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:39:38,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 17:39:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:38,556 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:39:38,556 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:39:38,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:39:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:39:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 17:39:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:39:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 17:39:38,643 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2020-10-14 17:39:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:38,644 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 17:39:38,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:39:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 17:39:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:39:38,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:38,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:38,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:39:38,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:38,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1520877022, now seen corresponding path program 1 times [2020-10-14 17:39:38,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:38,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418156684] [2020-10-14 17:39:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:40,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 17:39:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1898 [2020-10-14 17:39:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:40,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 17:39:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:40,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:39:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:40,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:40,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:40,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 17:39:40,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:40,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:39:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:39:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:40,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:40,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:40,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 17:39:40,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:40,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:39:40,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:39:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:40,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:39:40,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:40,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:39:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:39:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 17:39:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418156684] [2020-10-14 17:39:40,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:40,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:39:40,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165854517] [2020-10-14 17:39:40,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:39:40,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:40,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:39:40,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:39:40,818 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-10-14 17:39:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:41,020 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-14 17:39:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:39:41,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-14 17:39:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:41,022 INFO L225 Difference]: With dead ends: 49 [2020-10-14 17:39:41,022 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:39:41,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:39:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:39:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 17:39:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 17:39:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 17:39:41,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 39 [2020-10-14 17:39:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:41,032 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 17:39:41,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:39:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 17:39:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:39:41,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:41,035 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:41,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:39:41,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:41,036 INFO L82 PathProgramCache]: Analyzing trace with hash 132160544, now seen corresponding path program 2 times [2020-10-14 17:39:41,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:41,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173133950] [2020-10-14 17:39:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:41,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:39:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-14 17:39:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 17:39:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:44,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:39:44,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 17:39:44,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:39:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:39:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:44,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 17:39:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:39:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:39:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:39:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:44,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:39:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-14 17:39:44,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173133950] [2020-10-14 17:39:44,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:44,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:39:44,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12684869] [2020-10-14 17:39:44,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:39:44,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:39:44,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:44,363 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-14 17:39:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:44,496 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-14 17:39:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:39:44,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 17:39:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:44,498 INFO L225 Difference]: With dead ends: 46 [2020-10-14 17:39:44,498 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:39:44,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:39:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:39:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 17:39:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:39:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 17:39:44,514 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 45 [2020-10-14 17:39:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 17:39:44,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:39:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 17:39:44,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 17:39:44,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:44,521 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:44,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:39:44,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:44,522 INFO L82 PathProgramCache]: Analyzing trace with hash 26387134, now seen corresponding path program 1 times [2020-10-14 17:39:44,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:44,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339129770] [2020-10-14 17:39:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 17:39:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:39:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-14 17:39:49,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:39:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 17:39:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 17:39:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:50,394 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-14 17:39:50,600 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2020-10-14 17:39:50,798 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-14 17:39:51,019 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2020-10-14 17:39:51,396 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 30 [2020-10-14 17:39:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:51,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:39:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:51,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 17:39:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:39:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:39:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:39:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:52,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:52,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:52,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-14 17:39:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:52,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:39:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:39:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:39:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:53,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:53,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:39:53,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 17:39:53,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:53,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:39:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:39:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 17:39:54,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339129770] [2020-10-14 17:39:54,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:54,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:39:54,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141804967] [2020-10-14 17:39:54,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:39:54,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:54,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:39:54,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:39:54,251 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 24 states. [2020-10-14 17:39:54,632 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 17:39:55,791 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-10-14 17:39:56,384 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-14 17:39:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:59,388 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-14 17:39:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:39:59,389 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 47 [2020-10-14 17:39:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:59,393 INFO L225 Difference]: With dead ends: 54 [2020-10-14 17:39:59,393 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:39:59,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:39:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:39:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-10-14 17:39:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 17:39:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-14 17:39:59,408 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 47 [2020-10-14 17:39:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:59,409 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-14 17:39:59,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:39:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-14 17:39:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 17:39:59,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:59,412 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:59,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:39:59,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1457355228, now seen corresponding path program 2 times [2020-10-14 17:39:59,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:59,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511445219] [2020-10-14 17:39:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:59,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 17:40:04,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:40:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:40:04,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:04,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:40:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:40:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:04,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:40:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:04,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:40:04,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 17:40:04,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:04,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:40:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:40:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:04,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:40:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:40:04,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 17:40:04,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:04,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:40:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:40:04,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 17:40:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:40:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:40:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:04,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 17:40:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 17:40:04,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511445219] [2020-10-14 17:40:04,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:04,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:40:04,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682023563] [2020-10-14 17:40:04,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:40:04,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:40:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:40:04,617 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 9 states. [2020-10-14 17:40:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:04,973 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-10-14 17:40:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:40:04,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-14 17:40:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:04,976 INFO L225 Difference]: With dead ends: 88 [2020-10-14 17:40:04,976 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:40:04,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:40:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:40:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-10-14 17:40:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:40:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-14 17:40:05,006 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 49 [2020-10-14 17:40:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:05,007 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-14 17:40:05,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:40:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-14 17:40:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 17:40:05,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:05,012 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:05,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:40:05,014 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash 592173116, now seen corresponding path program 3 times [2020-10-14 17:40:05,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:05,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021944567] [2020-10-14 17:40:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 17:40:10,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:40:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:40:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:10,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:40:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:40:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:40:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:10,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:40:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:10,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:40:10,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:40:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:10,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:40:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:40:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:40:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 17:40:10,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:40:10,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:10,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:40:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 17:40:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 17:40:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:40:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:40:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 17:40:10,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021944567] [2020-10-14 17:40:10,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:10,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:40:10,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412431009] [2020-10-14 17:40:10,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:40:10,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:40:10,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:40:10,226 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 11 states. [2020-10-14 17:40:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:10,679 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-14 17:40:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:40:10,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-14 17:40:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:10,681 INFO L225 Difference]: With dead ends: 81 [2020-10-14 17:40:10,681 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:40:10,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:40:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:40:10,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-14 17:40:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:40:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 17:40:10,693 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 49 [2020-10-14 17:40:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:10,693 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 17:40:10,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:40:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 17:40:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:40:10,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:10,697 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:10,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:40:10,697 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:10,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1009060164, now seen corresponding path program 4 times [2020-10-14 17:40:10,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:10,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610390869] [2020-10-14 17:40:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 17:40:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:40:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:40:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:15,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:15,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:15,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:40:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:40:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:15,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:40:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:40:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:15,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:40:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 17:40:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 17:40:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 17:40:15,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610390869] [2020-10-14 17:40:15,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:15,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:40:15,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077547029] [2020-10-14 17:40:15,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:40:15,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:40:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:40:15,857 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2020-10-14 17:40:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:40:16,174 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-14 17:40:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:40:16,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-14 17:40:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:40:16,176 INFO L225 Difference]: With dead ends: 58 [2020-10-14 17:40:16,176 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 17:40:16,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:40:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 17:40:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-10-14 17:40:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:40:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 17:40:16,184 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 53 [2020-10-14 17:40:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:40:16,185 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 17:40:16,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:40:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 17:40:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:40:16,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:40:16,186 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:40:16,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:40:16,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:40:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:40:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 176086618, now seen corresponding path program 5 times [2020-10-14 17:40:16,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:40:16,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278197419] [2020-10-14 17:40:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:40:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:40:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:40:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5714 [2020-10-14 17:40:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:40:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 17:40:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 17:40:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:40:24,806 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-10-14 17:40:27,389 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2020-10-14 17:40:30,088 WARN L193 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2020-10-14 17:40:30,572 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2020-10-14 17:40:31,082 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 69 [2020-10-14 17:40:33,674 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-14 17:40:34,163 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-14 17:40:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:40:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:40:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:40:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:40:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:38,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:38,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:38,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:38,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 17:40:38,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:38,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:40:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:38,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:40:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:55,293 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-14 17:40:55,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:40:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:40:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:40:55,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:40:55,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:40:55,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:40:55,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:40:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 98 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 17:40:58,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278197419] [2020-10-14 17:40:58,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:40:58,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:40:58,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674449471] [2020-10-14 17:40:58,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:40:58,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:40:58,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:40:58,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=801, Unknown=2, NotChecked=0, Total=870 [2020-10-14 17:40:58,170 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 30 states. [2020-10-14 17:40:58,473 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 17:40:59,954 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2020-10-14 17:41:31,766 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-10-14 17:41:41,178 WARN L193 SmtUtils]: Spent 7.05 s on a formula simplification. DAG size of input: 109 DAG size of output: 109 [2020-10-14 17:41:46,712 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-10-14 17:41:54,520 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 17:41:56,581 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 17:41:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:41:59,409 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-14 17:41:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:41:59,411 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-14 17:41:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:41:59,413 INFO L225 Difference]: With dead ends: 59 [2020-10-14 17:41:59,413 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 17:41:59,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 55.9s TimeCoverageRelationStatistics Valid=156, Invalid=1912, Unknown=2, NotChecked=0, Total=2070 [2020-10-14 17:41:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 17:41:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2020-10-14 17:41:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 17:41:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-14 17:41:59,428 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 55 [2020-10-14 17:41:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:41:59,429 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-14 17:41:59,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:41:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-14 17:41:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:41:59,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:41:59,430 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:41:59,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:41:59,431 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:41:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:41:59,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1575510824, now seen corresponding path program 6 times [2020-10-14 17:41:59,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:41:59,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506240895] [2020-10-14 17:41:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:41:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:41:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:41:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:04,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 17:42:04,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 17:42:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:04,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:42:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:42:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:42:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:42:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:04,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:04,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:42:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:04,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:42:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:42:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:04,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:42:04,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 17:42:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:04,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:42:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:42:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:42:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:42:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 17:42:04,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 17:42:04,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:42:04,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 17:42:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:42:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 17:42:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:04,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:42:04,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 17:42:04,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:04,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:42:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:42:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:42:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:42:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 17:42:04,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506240895] [2020-10-14 17:42:04,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:04,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:42:04,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854211811] [2020-10-14 17:42:04,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:42:04,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:04,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:42:04,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:42:04,868 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 13 states. [2020-10-14 17:42:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:05,629 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-14 17:42:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:42:05,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-14 17:42:05,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:05,632 INFO L225 Difference]: With dead ends: 95 [2020-10-14 17:42:05,632 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:42:05,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:42:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:42:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-10-14 17:42:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:42:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 17:42:05,641 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 57 [2020-10-14 17:42:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:05,642 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 17:42:05,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:42:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 17:42:05,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:42:05,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:05,643 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:05,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:42:05,643 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:05,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:05,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1918086232, now seen corresponding path program 7 times [2020-10-14 17:42:05,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:05,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898690036] [2020-10-14 17:42:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:10,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:42:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:42:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:10,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:42:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:42:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:42:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:42:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:42:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:42:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:42:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 17:42:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 17:42:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:10,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:42:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 17:42:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:42:10,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:42:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 17:42:10,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898690036] [2020-10-14 17:42:10,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:42:10,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:42:10,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497162319] [2020-10-14 17:42:10,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:42:10,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:42:10,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:42:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:42:10,839 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 11 states. [2020-10-14 17:42:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:42:11,336 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-14 17:42:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:42:11,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-14 17:42:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:42:11,339 INFO L225 Difference]: With dead ends: 66 [2020-10-14 17:42:11,339 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 17:42:11,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:42:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 17:42:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-10-14 17:42:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:42:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 17:42:11,348 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 61 [2020-10-14 17:42:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:42:11,348 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 17:42:11,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:42:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 17:42:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 17:42:11,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:42:11,351 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:42:11,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:42:11,351 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:42:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:42:11,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1352185078, now seen corresponding path program 8 times [2020-10-14 17:42:11,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:42:11,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808209489] [2020-10-14 17:42:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:42:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:42:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:42:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5757 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 17:42:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0