/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:52,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:52,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:52,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:52,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:52,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:52,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:52,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:52,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:52,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:52,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:52,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:52,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:52,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:52,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:52,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:52,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:52,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:52,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:52,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:52,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:52,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:52,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:52,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:52,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:52,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:52,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:52,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:52,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:52,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:52,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:52,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:52,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:52,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:52,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:52,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:52,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:52,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:52,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:52,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:52,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:52,621 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 14:37:52,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:52,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:52,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:52,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:52,651 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:52,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:52,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:52,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:52,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:52,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:52,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:52,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:52,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:52,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:52,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:52,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:52,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:52,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:52,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:52,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:52,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:52,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:52,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:52,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:52,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:52,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:52,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:52,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:52,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:52,656 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:37:53,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:53,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:53,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:53,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:53,161 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:53,162 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 14:37:53,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/948a2d820/330ea348fc1b478faf814cfe15ea0add/FLAGde273b6bf [2020-09-25 14:37:53,883 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:53,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 14:37:53,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/948a2d820/330ea348fc1b478faf814cfe15ea0add/FLAGde273b6bf [2020-09-25 14:37:54,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/948a2d820/330ea348fc1b478faf814cfe15ea0add [2020-09-25 14:37:54,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:54,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:54,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:54,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:54,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:54,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:54,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54, skipping insertion in model container [2020-09-25 14:37:54,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:54,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:54,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:54,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:54,671 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:54,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:54,922 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:54,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54 WrapperNode [2020-09-25 14:37:54,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:54,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:54,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:54,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:54,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:54,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:54,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:54,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:55,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:55,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:55,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (1/1) ... [2020-09-25 14:37:55,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:55,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:55,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:55,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:55,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (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 14:37:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:56,554 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:56,554 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:56,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:56 BoogieIcfgContainer [2020-09-25 14:37:56,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:56,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:56,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:56,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:56,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:54" (1/3) ... [2020-09-25 14:37:56,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:56, skipping insertion in model container [2020-09-25 14:37:56,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:54" (2/3) ... [2020-09-25 14:37:56,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:56, skipping insertion in model container [2020-09-25 14:37:56,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:56" (3/3) ... [2020-09-25 14:37:56,577 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 14:37:56,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:56,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:56,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:56,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:56,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:56,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:56,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:56,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:56,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:56,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:56,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:37:56,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:56,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:56,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 14:37:56,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:56,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597125458] [2020-09-25 14:37:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:38:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:38:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:38:02,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:38:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:38:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:38:02,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:38:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:02,361 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 14:38:02,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597125458] [2020-09-25 14:38:02,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:02,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:38:02,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687862052] [2020-09-25 14:38:02,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:02,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:02,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:02,396 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 14:38:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:04,653 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 14:38:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:04,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 14:38:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:04,694 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 14:38:04,694 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 14:38:04,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 14:38:04,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 14:38:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:38:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 14:38:04,863 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 14:38:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:04,868 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 14:38:04,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 14:38:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:38:04,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:04,887 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:04,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:04,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 14:38:04,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:04,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916592884] [2020-09-25 14:38:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 14:38:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:38:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:38:09,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:09,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:38:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:38:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:38:10,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:38:10,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:38:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:38:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:38:10,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:38:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:10,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916592884] [2020-09-25 14:38:10,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:10,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:10,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649881597] [2020-09-25 14:38:10,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:10,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:10,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:10,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:10,258 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 14:38:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:12,273 INFO L93 Difference]: Finished difference Result 1503 states and 1907 transitions. [2020-09-25 14:38:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:12,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 14:38:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:12,280 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 14:38:12,280 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 14:38:12,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 14:38:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 14:38:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 14:38:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1115 transitions. [2020-09-25 14:38:12,313 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1115 transitions. Word has length 161 [2020-09-25 14:38:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:12,313 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1115 transitions. [2020-09-25 14:38:12,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1115 transitions. [2020-09-25 14:38:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:38:12,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:12,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:12,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:12,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash 911880378, now seen corresponding path program 1 times [2020-09-25 14:38:12,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:12,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107538245] [2020-09-25 14:38:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 14:38:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 14:38:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 14:38:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:38:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:17,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:17,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:38:17,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:17,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:38:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:17,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:17,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:38:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:38:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:38:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:38:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:38:17,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107538245] [2020-09-25 14:38:17,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:17,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:38:17,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612398000] [2020-09-25 14:38:17,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:38:17,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:38:17,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:38:17,820 INFO L87 Difference]: Start difference. First operand 889 states and 1115 transitions. Second operand 8 states. [2020-09-25 14:38:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:19,953 INFO L93 Difference]: Finished difference Result 2081 states and 2694 transitions. [2020-09-25 14:38:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:38:19,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-09-25 14:38:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:19,962 INFO L225 Difference]: With dead ends: 2081 [2020-09-25 14:38:19,962 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 14:38:19,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 14:38:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1183. [2020-09-25 14:38:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-09-25 14:38:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1516 transitions. [2020-09-25 14:38:20,007 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1516 transitions. Word has length 193 [2020-09-25 14:38:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:20,008 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1516 transitions. [2020-09-25 14:38:20,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:38:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1516 transitions. [2020-09-25 14:38:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 14:38:20,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:20,016 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:20,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:20,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1927329477, now seen corresponding path program 1 times [2020-09-25 14:38:20,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:20,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203711799] [2020-09-25 14:38:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:25,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:38:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 14:38:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:38:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:25,801 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-09-25 14:38:26,022 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-09-25 14:38:26,260 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2020-09-25 14:38:26,497 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 45 [2020-09-25 14:38:26,710 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2020-09-25 14:38:26,884 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 37 [2020-09-25 14:38:27,042 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 33 [2020-09-25 14:38:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:27,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:27,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:27,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:27,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:27,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:27,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 14:38:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:27,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:38:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:38:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:27,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:38:27,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 14:38:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:27,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:38:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:38:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:28,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203711799] [2020-09-25 14:38:28,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:28,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:38:28,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173869660] [2020-09-25 14:38:28,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:38:28,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:38:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:38:28,026 INFO L87 Difference]: Start difference. First operand 1183 states and 1516 transitions. Second operand 21 states. [2020-09-25 14:38:29,451 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-09-25 14:38:30,177 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 14:38:32,561 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-09-25 14:38:33,031 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-09-25 14:38:34,191 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-09-25 14:38:34,908 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2020-09-25 14:38:35,772 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 107 [2020-09-25 14:38:36,207 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-09-25 14:38:37,397 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2020-09-25 14:38:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:39,575 INFO L93 Difference]: Finished difference Result 3106 states and 4059 transitions. [2020-09-25 14:38:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 14:38:39,575 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 200 [2020-09-25 14:38:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:39,585 INFO L225 Difference]: With dead ends: 3106 [2020-09-25 14:38:39,585 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 14:38:39,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=507, Invalid=1299, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 14:38:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 14:38:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1714. [2020-09-25 14:38:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1714 states. [2020-09-25 14:38:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2036 transitions. [2020-09-25 14:38:39,641 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2036 transitions. Word has length 200 [2020-09-25 14:38:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:39,642 INFO L479 AbstractCegarLoop]: Abstraction has 1714 states and 2036 transitions. [2020-09-25 14:38:39,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:38:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2036 transitions. [2020-09-25 14:38:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 14:38:39,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:39,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:39,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:39,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:39,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1235326992, now seen corresponding path program 1 times [2020-09-25 14:38:39,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:39,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528819067] [2020-09-25 14:38:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking...