/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=0.2 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:40,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:40,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:40,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:40,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:40,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:40,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:40,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:40,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:40,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:40,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:40,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:40,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:40,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:40,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:40,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:40,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:40,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:40,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:40,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:40,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:40,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:40,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:40,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:40,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:40,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:40,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:40,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:40,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:40,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:40,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:40,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:40,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:40,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:40,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:40,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:40,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:40,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:40,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:40,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:40,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:40,767 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 11:17:40,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:40,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:40,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:40,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:40,818 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:40,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:40,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:40,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:40,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:40,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:40,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:40,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:40,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:40,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:40,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:40,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:40,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:40,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:40,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:40,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:40,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:40,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:40,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:40,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:40,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:40,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:40,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:40,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:40,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:40,825 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:17:41,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:41,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:41,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:41,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:41,303 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:41,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 11:17:41,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9454ee281/ca3e466663f6452e84d1a1ec54134d43/FLAG6dc846b4a [2020-09-25 11:17:42,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:42,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 11:17:42,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9454ee281/ca3e466663f6452e84d1a1ec54134d43/FLAG6dc846b4a [2020-09-25 11:17:42,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9454ee281/ca3e466663f6452e84d1a1ec54134d43 [2020-09-25 11:17:42,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:42,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:42,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:42,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:42,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:42,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:42" (1/1) ... [2020-09-25 11:17:42,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:42, skipping insertion in model container [2020-09-25 11:17:42,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:42" (1/1) ... [2020-09-25 11:17:42,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:42,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:42,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:42,911 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:43,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:43,128 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:43,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43 WrapperNode [2020-09-25 11:17:43,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:43,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:43,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:43,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:43,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (1/1) ... [2020-09-25 11:17:43,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:43,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:43,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:43,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:43,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (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 11:17:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:44,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:44,724 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:44 BoogieIcfgContainer [2020-09-25 11:17:44,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:44,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:44,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:44,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:42" (1/3) ... [2020-09-25 11:17:44,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:44, skipping insertion in model container [2020-09-25 11:17:44,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:43" (2/3) ... [2020-09-25 11:17:44,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:44, skipping insertion in model container [2020-09-25 11:17:44,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:44" (3/3) ... [2020-09-25 11:17:44,751 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 11:17:44,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:44,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:44,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:44,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:44,846 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:44,846 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:44,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:44,846 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:44,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:44,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:44,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 11:17:44,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:44,931 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] [2020-09-25 11:17:44,932 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 11:17:44,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:44,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:17:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 11:17:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:17:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:17:50,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:50,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:17:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 11:17:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:17:50,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:50,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:50,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:17:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:50,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:17:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:50,596 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 11:17:50,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:17:50,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:50,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:50,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16548854] [2020-09-25 11:17:50,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:50,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:50,633 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:52,880 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:17:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:52,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 11:17:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:52,910 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:17:52,910 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:17:52,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:17:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:17:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:17:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:17:53,035 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 130 [2020-09-25 11:17:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:53,036 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:17:53,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:17:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 11:17:53,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:53,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:53,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:53,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:53,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:53,043 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 11:17:53,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:53,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757680800] [2020-09-25 11:17:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 11:17:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:17:58,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 11:17:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 11:17:58,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:58,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:17:58,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:58,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:17:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:58,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:58,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757680800] [2020-09-25 11:17:58,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:58,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:58,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077453559] [2020-09-25 11:17:58,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:58,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:58,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:58,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:58,327 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 11:18:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:00,210 INFO L93 Difference]: Finished difference Result 1526 states and 1937 transitions. [2020-09-25 11:18:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 11:18:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:00,219 INFO L225 Difference]: With dead ends: 1526 [2020-09-25 11:18:00,219 INFO L226 Difference]: Without dead ends: 560 [2020-09-25 11:18:00,223 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 11:18:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-25 11:18:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 547. [2020-09-25 11:18:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-09-25 11:18:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2020-09-25 11:18:00,254 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 164 [2020-09-25 11:18:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:00,255 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2020-09-25 11:18:00,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2020-09-25 11:18:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:18:00,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:00,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:00,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:00,259 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -507434900, now seen corresponding path program 1 times [2020-09-25 11:18:00,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:00,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123006026] [2020-09-25 11:18:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:18:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:18:05,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:05,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:18:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:18:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:18:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,053 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2020-09-25 11:18:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:18:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:06,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:06,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:18:06,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:18:06,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:06,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:18:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:06,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123006026] [2020-09-25 11:18:06,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:06,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:18:06,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99490943] [2020-09-25 11:18:06,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:18:06,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:06,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:18:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:18:06,771 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 16 states. [2020-09-25 11:18:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:09,952 INFO L93 Difference]: Finished difference Result 1021 states and 1258 transitions. [2020-09-25 11:18:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:18:09,953 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2020-09-25 11:18:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:09,957 INFO L225 Difference]: With dead ends: 1021 [2020-09-25 11:18:09,957 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 11:18:09,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:18:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 11:18:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 11:18:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 11:18:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 11:18:09,981 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 165 [2020-09-25 11:18:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:09,981 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 11:18:09,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:18:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 11:18:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:18:09,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:09,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:09,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:09,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1330770896, now seen corresponding path program 1 times [2020-09-25 11:18:09,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:09,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601465586] [2020-09-25 11:18:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 11:18:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:18:15,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:18:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:18:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 11:18:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:18:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 11:18:15,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:15,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:18:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:15,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601465586] [2020-09-25 11:18:15,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:15,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:18:15,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656962899] [2020-09-25 11:18:15,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:18:15,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:15,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:18:15,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:15,927 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 12 states. [2020-09-25 11:18:16,327 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-25 11:18:16,888 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-09-25 11:18:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:20,302 INFO L93 Difference]: Finished difference Result 2057 states and 2402 transitions. [2020-09-25 11:18:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:18:20,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2020-09-25 11:18:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:20,312 INFO L225 Difference]: With dead ends: 2057 [2020-09-25 11:18:20,312 INFO L226 Difference]: Without dead ends: 1500 [2020-09-25 11:18:20,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:18:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-25 11:18:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1163. [2020-09-25 11:18:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-09-25 11:18:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1283 transitions. [2020-09-25 11:18:20,361 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1283 transitions. Word has length 168 [2020-09-25 11:18:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:20,377 INFO L479 AbstractCegarLoop]: Abstraction has 1163 states and 1283 transitions. [2020-09-25 11:18:20,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:18:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1283 transitions. [2020-09-25 11:18:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 11:18:20,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:20,384 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:20,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:20,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:20,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:20,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2107174930, now seen corresponding path program 1 times [2020-09-25 11:18:20,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:20,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454166977] [2020-09-25 11:18:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:20,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 11:18:25,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 11:18:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:25,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:18:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:18:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:18:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:18:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:18:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:18:25,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454166977] [2020-09-25 11:18:25,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:25,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339145856] [2020-09-25 11:18:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:25,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:25,902 INFO L87 Difference]: Start difference. First operand 1163 states and 1283 transitions. Second operand 7 states. [2020-09-25 11:18:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:28,129 INFO L93 Difference]: Finished difference Result 2199 states and 2462 transitions. [2020-09-25 11:18:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:18:28,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 11:18:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:28,137 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 11:18:28,137 INFO L226 Difference]: Without dead ends: 1208 [2020-09-25 11:18:28,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-09-25 11:18:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1148. [2020-09-25 11:18:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2020-09-25 11:18:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1247 transitions. [2020-09-25 11:18:28,189 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1247 transitions. Word has length 190 [2020-09-25 11:18:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:28,191 INFO L479 AbstractCegarLoop]: Abstraction has 1148 states and 1247 transitions. [2020-09-25 11:18:28,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1247 transitions. [2020-09-25 11:18:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 11:18:28,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:28,196 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:28,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:28,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:28,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:28,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1606151622, now seen corresponding path program 1 times [2020-09-25 11:18:28,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:28,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644387073] [2020-09-25 11:18:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking...