/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=SMALLEST --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/Problem02_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:31,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:31,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:31,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:31,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:31,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:31,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:31,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:31,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:31,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:31,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:31,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:31,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:31,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:31,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:31,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:31,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:31,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:31,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:31,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:31,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:31,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:31,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:31,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:31,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:31,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:31,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:31,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:31,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:31,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:31,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:31,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:31,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:31,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:31,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:31,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:31,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:31,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:31,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:31,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:31,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:31,653 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 [2020-09-24 18:21:31,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:31,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:31,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:31,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:31,681 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:31,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:31,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:31,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:31,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:31,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:31,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:31,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:31,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:31,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:31,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:31,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:31,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:31,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:31,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:31,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:31,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:31,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:31,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:31,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:31,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:31,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:31,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:31,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:31,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:31,686 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:21:32,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:32,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:32,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:32,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:32,144 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:32,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-24 18:21:32,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ede97208f/c8cb9bdd202c4c51b415ec700543666e/FLAG048a33b43 [2020-09-24 18:21:32,920 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:32,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-24 18:21:32,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ede97208f/c8cb9bdd202c4c51b415ec700543666e/FLAG048a33b43 [2020-09-24 18:21:33,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ede97208f/c8cb9bdd202c4c51b415ec700543666e [2020-09-24 18:21:33,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:33,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:33,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:33,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:33,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:33,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33, skipping insertion in model container [2020-09-24 18:21:33,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:33,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:33,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:33,774 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:33,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:33,892 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:33,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33 WrapperNode [2020-09-24 18:21:33,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:33,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:33,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:33,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:33,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:33,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (1/1) ... [2020-09-24 18:21:34,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:34,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:34,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:34,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:34,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (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 [2020-09-24 18:21:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:35,588 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:35,589 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:35,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:35 BoogieIcfgContainer [2020-09-24 18:21:35,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:35,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:35,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:35,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:35,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:33" (1/3) ... [2020-09-24 18:21:35,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:35, skipping insertion in model container [2020-09-24 18:21:35,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:33" (2/3) ... [2020-09-24 18:21:35,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:35, skipping insertion in model container [2020-09-24 18:21:35,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:35" (3/3) ... [2020-09-24 18:21:35,616 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-24 18:21:35,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:35,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:35,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:35,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:35,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:35,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:35,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:35,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:35,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:35,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:35,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 18:21:35,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:35,762 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] [2020-09-24 18:21:35,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-24 18:21:35,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:35,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-24 18:21:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:41,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 18:21:41,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:21:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 18:21:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:21:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:41,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:21:41,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:41,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-24 18:21:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:41,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:21:41,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045478220] [2020-09-24 18:21:41,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:41,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:41,411 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-24 18:21:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:43,838 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:21:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:43,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-24 18:21:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:43,867 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:21:43,867 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:21:43,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:21:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:21:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:21:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:21:43,987 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 134 [2020-09-24 18:21:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:21:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:21:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 18:21:43,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:44,000 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] [2020-09-24 18:21:44,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:44,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:44,001 INFO L82 PathProgramCache]: Analyzing trace with hash 728841274, now seen corresponding path program 1 times [2020-09-24 18:21:44,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:44,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182517874] [2020-09-24 18:21:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:44,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:21:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-24 18:21:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:49,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:49,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:49,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:49,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:21:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:49,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182517874] [2020-09-24 18:21:49,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:49,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:49,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415308929] [2020-09-24 18:21:49,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:49,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:49,278 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:21:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:51,147 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-24 18:21:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:51,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-24 18:21:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:51,155 INFO L225 Difference]: With dead ends: 1400 [2020-09-24 18:21:51,155 INFO L226 Difference]: Without dead ends: 801 [2020-09-24 18:21:51,158 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 [2020-09-24 18:21:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-24 18:21:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-24 18:21:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-24 18:21:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-24 18:21:51,233 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 151 [2020-09-24 18:21:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:51,238 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-24 18:21:51,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-24 18:21:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:21:51,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:51,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:51,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:51,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -652427357, now seen corresponding path program 1 times [2020-09-24 18:21:51,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:51,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316894035] [2020-09-24 18:21:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 18:21:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:21:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:21:56,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:21:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:21:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:56,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:56,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:56,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:56,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:56,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:56,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:56,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:21:56,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:21:56,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:56,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316894035] [2020-09-24 18:21:56,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:56,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:56,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614000285] [2020-09-24 18:21:56,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:56,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:56,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:56,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:56,538 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-24 18:21:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:58,634 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-24 18:21:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:58,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:21:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:58,643 INFO L225 Difference]: With dead ends: 1709 [2020-09-24 18:21:58,644 INFO L226 Difference]: Without dead ends: 955 [2020-09-24 18:21:58,647 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 [2020-09-24 18:21:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-24 18:21:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-24 18:21:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-24 18:21:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-24 18:21:58,694 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 156 [2020-09-24 18:21:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:58,695 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-24 18:21:58,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-24 18:21:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 18:21:58,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:58,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:58,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:58,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:58,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1109563890, now seen corresponding path program 1 times [2020-09-24 18:21:58,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:58,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132123218] [2020-09-24 18:21:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:22:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:22:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:22:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-24 18:22:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:03,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:03,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:03,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:03,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:03,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 18:22:03,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:22:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:04,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132123218] [2020-09-24 18:22:04,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:04,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:22:04,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124238818] [2020-09-24 18:22:04,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:22:04,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:22:04,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:04,048 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 6 states. [2020-09-24 18:22:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:06,803 INFO L93 Difference]: Finished difference Result 3298 states and 3964 transitions. [2020-09-24 18:22:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:22:06,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-24 18:22:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:06,822 INFO L225 Difference]: With dead ends: 3298 [2020-09-24 18:22:06,822 INFO L226 Difference]: Without dead ends: 2391 [2020-09-24 18:22:06,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:06,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-09-24 18:22:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2031. [2020-09-24 18:22:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-24 18:22:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2425 transitions. [2020-09-24 18:22:06,923 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2425 transitions. Word has length 163 [2020-09-24 18:22:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:06,924 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2425 transitions. [2020-09-24 18:22:06,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:22:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2425 transitions. [2020-09-24 18:22:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:22:06,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:06,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:06,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:06,933 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:06,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1675281103, now seen corresponding path program 1 times [2020-09-24 18:22:06,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:06,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911184810] [2020-09-24 18:22:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:11,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:11,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 18:22:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:22:11,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:22:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-24 18:22:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 18:22:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:12,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:12,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:22:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:22:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:22:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:12,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911184810] [2020-09-24 18:22:12,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:12,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:12,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058786508] [2020-09-24 18:22:12,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:12,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:12,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:12,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:12,248 INFO L87 Difference]: Start difference. First operand 2031 states and 2425 transitions. Second operand 5 states. [2020-09-24 18:22:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:14,096 INFO L93 Difference]: Finished difference Result 5559 states and 6835 transitions. [2020-09-24 18:22:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:14,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-24 18:22:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:14,115 INFO L225 Difference]: With dead ends: 5559 [2020-09-24 18:22:14,115 INFO L226 Difference]: Without dead ends: 3550 [2020-09-24 18:22:14,123 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 [2020-09-24 18:22:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2020-09-24 18:22:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3240. [2020-09-24 18:22:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3240 states. [2020-09-24 18:22:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 3958 transitions. [2020-09-24 18:22:14,221 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 3958 transitions. Word has length 177 [2020-09-24 18:22:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:14,221 INFO L479 AbstractCegarLoop]: Abstraction has 3240 states and 3958 transitions. [2020-09-24 18:22:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 3958 transitions. [2020-09-24 18:22:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:22:14,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:14,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:14,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:14,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash 775281414, now seen corresponding path program 1 times [2020-09-24 18:22:14,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:14,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444130915] [2020-09-24 18:22:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:19,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 18:22:19,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:22:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:19,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:19,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:19,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:22:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:22:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:19,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:19,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:22:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:19,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444130915] [2020-09-24 18:22:19,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:19,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:19,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534313762] [2020-09-24 18:22:19,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:19,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:19,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:19,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:19,498 INFO L87 Difference]: Start difference. First operand 3240 states and 3958 transitions. Second operand 7 states. [2020-09-24 18:22:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:21,979 INFO L93 Difference]: Finished difference Result 7981 states and 10409 transitions. [2020-09-24 18:22:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:22:21,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 18:22:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:22,011 INFO L225 Difference]: With dead ends: 7981 [2020-09-24 18:22:22,012 INFO L226 Difference]: Without dead ends: 4763 [2020-09-24 18:22:22,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:22:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2020-09-24 18:22:22,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 3433. [2020-09-24 18:22:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2020-09-24 18:22:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 4267 transitions. [2020-09-24 18:22:22,152 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 4267 transitions. Word has length 181 [2020-09-24 18:22:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:22,152 INFO L479 AbstractCegarLoop]: Abstraction has 3433 states and 4267 transitions. [2020-09-24 18:22:22,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 4267 transitions. [2020-09-24 18:22:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 18:22:22,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:22,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:22,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:22,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1686756706, now seen corresponding path program 1 times [2020-09-24 18:22:22,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:22,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613741383] [2020-09-24 18:22:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking...