/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 SingleStatement --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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:18:15,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:18:15,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:18:15,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:18:15,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:18:15,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:18:15,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:18:15,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:18:15,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:18:15,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:18:15,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:18:15,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:18:15,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:18:15,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:18:15,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:18:15,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:18:15,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:18:15,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:18:15,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:18:15,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:18:15,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:18:15,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:18:15,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:18:15,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:18:15,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:18:15,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:18:15,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:18:15,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:18:15,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:18:15,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:18:15,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:18:15,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:18:15,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:18:15,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:18:15,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:18:15,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:18:15,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:18:15,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:18:15,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:18:15,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:18:15,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:18:15,684 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 [2020-09-25 10:18:15,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:18:15,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:18:15,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:18:15,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:18:15,742 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:18:15,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:18:15,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:18:15,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:18:15,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:18:15,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:18:15,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:18:15,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:18:15,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:18:15,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:18:15,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:18:15,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:18:15,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:18:15,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:18:15,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:18:15,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:18:15,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:18:15,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:18:15,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:18:15,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:18:15,749 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 -> SingleStatement 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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=true; [2020-09-25 10:18:16,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:18:16,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:18:16,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:18:16,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:18:16,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:18:16,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 10:18:16,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c99194ac/813ff050720c407394884d07c76b81e8/FLAG121e0021f [2020-09-25 10:18:16,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:18:16,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-09-25 10:18:16,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c99194ac/813ff050720c407394884d07c76b81e8/FLAG121e0021f [2020-09-25 10:18:17,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c99194ac/813ff050720c407394884d07c76b81e8 [2020-09-25 10:18:17,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:18:17,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:18:17,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:17,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:18:17,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:18:17,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337988d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17, skipping insertion in model container [2020-09-25 10:18:17,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:18:17,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:18:17,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:17,371 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:18:17,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:18:17,412 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:18:17,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17 WrapperNode [2020-09-25 10:18:17,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:18:17,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:18:17,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:18:17,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:18:17,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (1/1) ... [2020-09-25 10:18:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:18:17,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:18:17,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:18:17,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:18:17,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (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 [2020-09-25 10:18:17,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:18:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:18:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:18:17,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:18:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:18:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:18:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:18:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:18:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:18:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:18:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:18:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:18:17,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:18:17,875 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:18:17,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:17 BoogieIcfgContainer [2020-09-25 10:18:17,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:18:17,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:18:17,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:18:17,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:18:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:17" (1/3) ... [2020-09-25 10:18:17,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11ebbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:17, skipping insertion in model container [2020-09-25 10:18:17,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:17" (2/3) ... [2020-09-25 10:18:17,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11ebbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:17, skipping insertion in model container [2020-09-25 10:18:17,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:17" (3/3) ... [2020-09-25 10:18:17,911 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-09-25 10:18:17,937 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:18:17,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:18:17,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:18:17,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:18:17,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:18:17,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:18:17,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:18:17,999 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:18:17,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:18:18,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:18:18,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:18:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 10:18:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 10:18:18,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:18,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:18,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 341466613, now seen corresponding path program 1 times [2020-09-25 10:18:18,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:18,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422286664] [2020-09-25 10:18:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:18:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 10:18:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:18,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:18,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:18:18,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:18,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:18,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:18:18,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:18,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:18,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:18,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422286664] [2020-09-25 10:18:18,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:18,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:18:18,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104135673] [2020-09-25 10:18:18,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:18:18,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:18:18,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:18:18,389 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-09-25 10:18:18,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:18,541 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-09-25 10:18:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:18:18,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-09-25 10:18:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:18,557 INFO L225 Difference]: With dead ends: 51 [2020-09-25 10:18:18,557 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 10:18:18,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:18:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 10:18:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-09-25 10:18:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 10:18:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 10:18:18,606 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2020-09-25 10:18:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:18,607 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 10:18:18,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:18:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 10:18:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:18:18,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:18,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:18,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:18:18,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash 178703795, now seen corresponding path program 1 times [2020-09-25 10:18:18,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:18,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108364151] [2020-09-25 10:18:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:19,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:18:19,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:18:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 10:18:19,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:19,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:18:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:18:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:18:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:19,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:19,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:19,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:19,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108364151] [2020-09-25 10:18:19,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:19,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:18:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986165885] [2020-09-25 10:18:19,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:18:19,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:18:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:18:19,178 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 10:18:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:19,482 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-09-25 10:18:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:18:19,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-25 10:18:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:19,485 INFO L225 Difference]: With dead ends: 38 [2020-09-25 10:18:19,485 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 10:18:19,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 10:18:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 10:18:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 10:18:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-09-25 10:18:19,501 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-09-25 10:18:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:19,501 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-09-25 10:18:19,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:18:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-09-25 10:18:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:18:19,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:19,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:19,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:18:19,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 563687025, now seen corresponding path program 2 times [2020-09-25 10:18:19,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:19,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303774041] [2020-09-25 10:18:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:19,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:18:19,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:18:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 10:18:19,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:19,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:19,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:18:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:18:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:20,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:20,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:20,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:20,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:20,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:20,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303774041] [2020-09-25 10:18:20,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:20,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:18:20,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571567306] [2020-09-25 10:18:20,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:18:20,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:20,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:18:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:18:20,136 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-09-25 10:18:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:20,400 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-09-25 10:18:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:18:20,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 10:18:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:20,402 INFO L225 Difference]: With dead ends: 42 [2020-09-25 10:18:20,402 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 10:18:20,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 10:18:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-09-25 10:18:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 10:18:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-25 10:18:20,414 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2020-09-25 10:18:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:20,415 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-25 10:18:20,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:18:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-25 10:18:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:18:20,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:20,417 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] [2020-09-25 10:18:20,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:18:20,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:20,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1026490321, now seen corresponding path program 3 times [2020-09-25 10:18:20,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:20,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591258823] [2020-09-25 10:18:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:20,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:18:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:18:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-09-25 10:18:21,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:18:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:21,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591258823] [2020-09-25 10:18:21,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:21,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:18:21,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879117242] [2020-09-25 10:18:21,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:18:21,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:18:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:18:21,372 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2020-09-25 10:18:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:21,724 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-09-25 10:18:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:18:21,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 10:18:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:21,726 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:18:21,726 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 10:18:21,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 10:18:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 10:18:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 10:18:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-09-25 10:18:21,734 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 33 [2020-09-25 10:18:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:21,734 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-09-25 10:18:21,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:18:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-09-25 10:18:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 10:18:21,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:21,736 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:21,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:18:21,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:21,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2083373805, now seen corresponding path program 4 times [2020-09-25 10:18:21,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:21,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895770105] [2020-09-25 10:18:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:23,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 10:18:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:18:23,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-09-25 10:18:23,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:23,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:18:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:18:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:23,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:23,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:18:23,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:23,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:23,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:23,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895770105] [2020-09-25 10:18:23,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:23,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:18:23,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761818872] [2020-09-25 10:18:23,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:18:23,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:23,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:18:23,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:18:23,499 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2020-09-25 10:18:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:23,900 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-09-25 10:18:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:18:23,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-09-25 10:18:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:23,901 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:18:23,902 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 10:18:23,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:18:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 10:18:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-09-25 10:18:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:18:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-09-25 10:18:23,912 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 37 [2020-09-25 10:18:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:23,913 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-09-25 10:18:23,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:18:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-09-25 10:18:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 10:18:23,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:23,914 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:23,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:18:23,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:23,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash -540084565, now seen corresponding path program 5 times [2020-09-25 10:18:23,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:23,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298220077] [2020-09-25 10:18:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:18:25,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:18:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-09-25 10:18:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:18:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:18:25,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:18:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:25,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:25,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:25,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:25,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:25,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:18:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:25,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298220077] [2020-09-25 10:18:25,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:25,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:18:25,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476524383] [2020-09-25 10:18:25,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:18:25,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:25,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:18:25,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:18:25,404 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 17 states. [2020-09-25 10:18:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:25,891 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 10:18:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:18:25,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-09-25 10:18:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:25,893 INFO L225 Difference]: With dead ends: 54 [2020-09-25 10:18:25,893 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 10:18:25,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:18:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 10:18:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-09-25 10:18:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 10:18:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-25 10:18:25,900 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 41 [2020-09-25 10:18:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:25,901 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-25 10:18:25,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:18:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-25 10:18:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:18:25,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:25,902 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:25,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:18:25,902 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1679039337, now seen corresponding path program 6 times [2020-09-25 10:18:25,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:25,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990205153] [2020-09-25 10:18:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:18:27,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:18:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1195 [2020-09-25 10:18:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:18:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:18:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:27,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:27,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:27,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990205153] [2020-09-25 10:18:27,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:27,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:18:27,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112061827] [2020-09-25 10:18:27,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:18:27,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:27,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:18:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:18:27,343 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-09-25 10:18:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:27,951 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-09-25 10:18:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:18:27,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-25 10:18:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:27,953 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:18:27,954 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 10:18:27,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:18:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 10:18:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-25 10:18:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:18:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-25 10:18:27,970 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 45 [2020-09-25 10:18:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:27,973 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-25 10:18:27,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:18:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-25 10:18:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:18:27,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:27,977 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:27,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:18:27,977 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1134342439, now seen corresponding path program 7 times [2020-09-25 10:18:27,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:27,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208849011] [2020-09-25 10:18:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:28,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:29,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 10:18:29,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:18:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-09-25 10:18:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:29,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:18:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:18:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:29,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:29,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:18:29,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:29,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:29,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208849011] [2020-09-25 10:18:29,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:29,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:18:29,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309590820] [2020-09-25 10:18:29,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:18:29,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:18:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:18:29,826 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 21 states. [2020-09-25 10:18:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:30,547 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 10:18:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:18:30,547 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-09-25 10:18:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:30,549 INFO L225 Difference]: With dead ends: 62 [2020-09-25 10:18:30,549 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 10:18:30,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 10:18:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 10:18:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-25 10:18:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:18:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-09-25 10:18:30,562 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 49 [2020-09-25 10:18:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:30,563 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-09-25 10:18:30,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:18:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-09-25 10:18:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 10:18:30,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:30,564 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:30,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:18:30,565 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:30,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1565013989, now seen corresponding path program 8 times [2020-09-25 10:18:30,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:30,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400834661] [2020-09-25 10:18:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:32,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:32,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:18:32,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:18:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2339 [2020-09-25 10:18:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:32,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 10:18:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:18:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:33,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:33,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:33,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:33,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:33,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400834661] [2020-09-25 10:18:33,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:33,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:18:33,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148152491] [2020-09-25 10:18:33,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:18:33,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:33,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:18:33,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:18:33,244 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 23 states. [2020-09-25 10:18:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:34,063 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 10:18:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 10:18:34,064 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-09-25 10:18:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:34,065 INFO L225 Difference]: With dead ends: 66 [2020-09-25 10:18:34,065 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 10:18:34,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 10:18:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 10:18:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-09-25 10:18:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 10:18:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-09-25 10:18:34,080 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 53 [2020-09-25 10:18:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:34,080 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-09-25 10:18:34,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:18:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-09-25 10:18:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:18:34,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:34,083 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:34,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:18:34,084 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:34,084 INFO L82 PathProgramCache]: Analyzing trace with hash 339095459, now seen corresponding path program 9 times [2020-09-25 10:18:34,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:34,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320263152] [2020-09-25 10:18:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:36,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:36,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:18:36,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:18:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2885 [2020-09-25 10:18:36,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:36,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:18:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:36,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:18:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:37,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:37,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320263152] [2020-09-25 10:18:37,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:37,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 10:18:37,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408641948] [2020-09-25 10:18:37,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 10:18:37,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:37,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 10:18:37,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:18:37,447 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 25 states. [2020-09-25 10:18:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:38,647 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2020-09-25 10:18:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:18:38,648 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-09-25 10:18:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:38,649 INFO L225 Difference]: With dead ends: 70 [2020-09-25 10:18:38,649 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 10:18:38,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 10:18:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 10:18:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-09-25 10:18:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 10:18:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-09-25 10:18:38,657 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 57 [2020-09-25 10:18:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:38,658 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-09-25 10:18:38,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 10:18:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-09-25 10:18:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 10:18:38,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:18:38,659 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:18:38,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:18:38,659 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:18:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:18:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash 801511521, now seen corresponding path program 10 times [2020-09-25 10:18:38,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:18:38,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913843208] [2020-09-25 10:18:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:18:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:43,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:43,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:18:43,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:18:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4653 [2020-09-25 10:18:43,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:43,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 10:18:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:18:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:18:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:43,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:43,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:43,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:18:43,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:43,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:43,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:18:43,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913843208] [2020-09-25 10:18:43,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:18:43,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 10:18:43,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467229068] [2020-09-25 10:18:43,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 10:18:43,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:43,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 10:18:43,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:18:43,808 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 27 states. [2020-09-25 10:18:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:18:45,189 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-09-25 10:18:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:18:45,189 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-09-25 10:18:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:18:45,190 INFO L225 Difference]: With dead ends: 62 [2020-09-25 10:18:45,190 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:18:45,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=431, Invalid=2119, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 10:18:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:18:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:18:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:18:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:18:45,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-25 10:18:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:18:45,194 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:18:45,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 10:18:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:18:45,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:18:45,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:18:45,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:18:45,401 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-09-25 10:18:45,406 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:45,407 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:18:45,407 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_144~0 |old(~__return_144~0)|)) [2020-09-25 10:18:45,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:45,407 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:18:45,407 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:18:45,408 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:18:45,408 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:18:45,408 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:45,408 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 10:18:45,408 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 10:18:45,408 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:45,409 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 10:18:45,410 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:18:45,410 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:18:45,410 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-09-25 10:18:45,411 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-09-25 10:18:45,411 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 10:18:45,411 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 10:18:45,412 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 10:18:45,413 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 10:18:45,413 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 10:18:45,413 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_144~0)| ~__return_144~0) [2020-09-25 10:18:45,413 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 10:18:45,414 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:18:45,414 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 10:18:45,416 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 10:18:45,416 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 10:18:45,416 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 10:18:45,416 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 10:18:45,416 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 10:18:45,419 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse2 (<= main_~main__x~0 (+ main_~main__y~0 24))) (.cse1 (= |old(~__return_144~0)| ~__return_144~0))) (or (let ((.cse0 (+ main_~main__x~0 50))) (and (<= 0 .cse0) .cse1 (<= .cse0 0))) (let ((.cse4 (+ main_~main__x~0 53)) (.cse3 (* 2 main_~main__y~0))) (and .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3) .cse1)) (and .cse2 (<= (+ main_~main__x~0 3) (* 7 main_~main__y~0)) .cse1) (let ((.cse5 (+ main_~main__x~0 51))) (and (<= main_~main__y~0 .cse5) (<= .cse5 main_~main__y~0) .cse1)) (and (<= main_~main__x~0 25) .cse1 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))))) [2020-09-25 10:18:45,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:45 BoogieIcfgContainer [2020-09-25 10:18:45,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:18:45,453 INFO L168 Benchmark]: Toolchain (without parser) took 28426.96 ms. Allocated memory was 113.8 MB in the beginning and 334.5 MB in the end (delta: 220.7 MB). Free memory was 71.6 MB in the beginning and 300.3 MB in the end (delta: -228.7 MB). Peak memory consumption was 206.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,456 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 113.8 MB. Free memory was 89.4 MB in the beginning and 89.3 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.05 ms. Allocated memory was 113.8 MB in the beginning and 130.0 MB in the end (delta: 16.3 MB). Free memory was 71.0 MB in the beginning and 99.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,461 INFO L168 Benchmark]: Boogie Preprocessor took 114.12 ms. Allocated memory was 130.0 MB in the beginning and 160.4 MB in the end (delta: 30.4 MB). Free memory was 99.7 MB in the beginning and 146.3 MB in the end (delta: -46.6 MB). Peak memory consumption was 751.4 kB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,461 INFO L168 Benchmark]: RCFGBuilder took 353.19 ms. Allocated memory is still 160.4 MB. Free memory was 146.3 MB in the beginning and 133.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,467 INFO L168 Benchmark]: TraceAbstraction took 27552.51 ms. Allocated memory was 160.4 MB in the beginning and 334.5 MB in the end (delta: 174.1 MB). Free memory was 132.6 MB in the beginning and 300.3 MB in the end (delta: -167.7 MB). Peak memory consumption was 220.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:18:45,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 113.8 MB. Free memory was 89.4 MB in the beginning and 89.3 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.05 ms. Allocated memory was 113.8 MB in the beginning and 130.0 MB in the end (delta: 16.3 MB). Free memory was 71.0 MB in the beginning and 99.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.12 ms. Allocated memory was 130.0 MB in the beginning and 160.4 MB in the end (delta: 30.4 MB). Free memory was 99.7 MB in the beginning and 146.3 MB in the end (delta: -46.6 MB). Peak memory consumption was 751.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 353.19 ms. Allocated memory is still 160.4 MB. Free memory was 146.3 MB in the beginning and 133.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27552.51 ms. Allocated memory was 160.4 MB in the beginning and 334.5 MB in the end (delta: 174.1 MB). Free memory was 132.6 MB in the beginning and 300.3 MB in the end (delta: -167.7 MB). Peak memory consumption was 220.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((0 <= main__x + 50 && \old(__return_144) == __return_144) && main__x + 50 <= 0) || (((main__x <= main__y + 24 && 2 * main__y <= main__x + 53) && main__x + 53 <= 2 * main__y) && \old(__return_144) == __return_144)) || ((main__x <= main__y + 24 && main__x + 3 <= 7 * main__y) && \old(__return_144) == __return_144)) || ((main__y <= main__x + 51 && main__x + 51 <= main__y) && \old(__return_144) == __return_144)) || ((main__x <= 25 && \old(__return_144) == __return_144) && main__x + 56 <= 3 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.2s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 648 SDslu, 639 SDs, 0 SdLazy, 4054 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 94 HoareAnnotationTreeSize, 5 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 95164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...