/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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:26,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:26,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:26,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:26,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:26,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:26,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:26,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:26,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:26,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:26,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:26,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:26,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:26,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:26,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:26,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:26,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:26,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:26,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:26,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:26,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:26,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:26,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:26,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:26,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:26,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:26,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:26,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:26,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:26,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:26,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:26,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:26,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:26,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:26,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:26,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:26,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:26,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:26,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:26,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:26,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:26,161 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 11:13:26,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:26,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:26,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:26,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:26,190 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:26,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:26,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:26,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:26,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:26,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:26,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:26,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:26,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:26,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:26,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:26,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:26,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:26,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:26,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:26,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:26,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:26,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:26,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:26,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:26,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:26,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:26,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:26,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:26,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:26,202 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 11:13:26,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:26,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:26,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:26,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:26,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:26,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 11:13:26,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb96c072/1e2ba19f06ed416a82beb12d5f286ae3/FLAG797fb7cf6 [2020-09-25 11:13:27,482 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:27,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 11:13:27,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb96c072/1e2ba19f06ed416a82beb12d5f286ae3/FLAG797fb7cf6 [2020-09-25 11:13:27,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb96c072/1e2ba19f06ed416a82beb12d5f286ae3 [2020-09-25 11:13:27,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:27,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:27,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:27,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:27,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:27,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:27" (1/1) ... [2020-09-25 11:13:27,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:27, skipping insertion in model container [2020-09-25 11:13:27,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:27" (1/1) ... [2020-09-25 11:13:27,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:27,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:28,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:28,371 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:28,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:28,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:28,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28 WrapperNode [2020-09-25 11:13:28,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:28,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:28,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:28,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:28,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (1/1) ... [2020-09-25 11:13:28,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:28,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:28,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:28,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:28,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (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 11:13:28,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:30,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:30,135 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:30,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:30 BoogieIcfgContainer [2020-09-25 11:13:30,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:30,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:30,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:30,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:30,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:27" (1/3) ... [2020-09-25 11:13:30,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:30, skipping insertion in model container [2020-09-25 11:13:30,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:28" (2/3) ... [2020-09-25 11:13:30,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:30, skipping insertion in model container [2020-09-25 11:13:30,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:30" (3/3) ... [2020-09-25 11:13:30,162 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 11:13:30,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:30,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:30,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:30,241 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:30,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:30,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:30,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:30,242 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:30,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:30,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:30,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 11:13:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:30,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:30,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 11:13:30,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:30,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593212538] [2020-09-25 11:13:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:35,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 11:13:35,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:13:35,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-09-25 11:13:35,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:35,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:13:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 11:13:35,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 11:13:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:13:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:36,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:13:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:36,232 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 11:13:36,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593212538] [2020-09-25 11:13:36,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:36,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:13:36,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018827716] [2020-09-25 11:13:36,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:36,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:36,266 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 11:13:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:38,461 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 11:13:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:38,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 11:13:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:38,489 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 11:13:38,489 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 11:13:38,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 11:13:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 11:13:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:13:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 11:13:38,632 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 141 [2020-09-25 11:13:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:38,633 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 11:13:38,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 11:13:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 11:13:38,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:38,654 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:38,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:38,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1608331772, now seen corresponding path program 1 times [2020-09-25 11:13:38,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:38,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877707244] [2020-09-25 11:13:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:13:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:13:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:13:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:43,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:13:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:13:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 11:13:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:13:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:43,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:43,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:43,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:44,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:44,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:44,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:13:44,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:44,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:13:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:44,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877707244] [2020-09-25 11:13:44,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:44,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:13:44,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661879561] [2020-09-25 11:13:44,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:44,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:44,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:44,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:44,251 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 9 states. [2020-09-25 11:13:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:47,956 INFO L93 Difference]: Finished difference Result 1904 states and 2521 transitions. [2020-09-25 11:13:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:13:47,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-09-25 11:13:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:47,974 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 11:13:47,975 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 11:13:47,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:13:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 11:13:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 11:13:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 11:13:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1152 transitions. [2020-09-25 11:13:48,058 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1152 transitions. Word has length 162 [2020-09-25 11:13:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:48,059 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1152 transitions. [2020-09-25 11:13:48,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:13:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1152 transitions. [2020-09-25 11:13:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:13:48,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:48,065 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:48,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:48,066 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1956295493, now seen corresponding path program 1 times [2020-09-25 11:13:48,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876904129] [2020-09-25 11:13:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 11:13:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:13:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:13:53,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 11:13:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 11:13:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:13:53,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:13:53,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:53,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:13:53,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:53,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876904129] [2020-09-25 11:13:53,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:53,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:13:53,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835549458] [2020-09-25 11:13:53,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:53,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:53,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:53,424 INFO L87 Difference]: Start difference. First operand 1003 states and 1152 transitions. Second operand 5 states. [2020-09-25 11:13:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:55,500 INFO L93 Difference]: Finished difference Result 2367 states and 2802 transitions. [2020-09-25 11:13:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:13:55,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 11:13:55,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:55,517 INFO L225 Difference]: With dead ends: 2367 [2020-09-25 11:13:55,517 INFO L226 Difference]: Without dead ends: 1388 [2020-09-25 11:13:55,521 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 11:13:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2020-09-25 11:13:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1146. [2020-09-25 11:13:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-09-25 11:13:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1339 transitions. [2020-09-25 11:13:55,575 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1339 transitions. Word has length 166 [2020-09-25 11:13:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:55,577 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1339 transitions. [2020-09-25 11:13:55,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1339 transitions. [2020-09-25 11:13:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 11:13:55,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:55,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:55,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:55,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash -129279164, now seen corresponding path program 1 times [2020-09-25 11:13:55,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:55,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264547432] [2020-09-25 11:13:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 11:14:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:14:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:00,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:00,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:14:00,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:00,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:00,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:14:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:14:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:00,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:14:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:00,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264547432] [2020-09-25 11:14:00,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:00,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:00,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117777227] [2020-09-25 11:14:00,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:00,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:00,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:00,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:00,915 INFO L87 Difference]: Start difference. First operand 1146 states and 1339 transitions. Second operand 5 states. [2020-09-25 11:14:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:02,707 INFO L93 Difference]: Finished difference Result 2717 states and 3280 transitions. [2020-09-25 11:14:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:02,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 11:14:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:02,716 INFO L225 Difference]: With dead ends: 2717 [2020-09-25 11:14:02,716 INFO L226 Difference]: Without dead ends: 1120 [2020-09-25 11:14:02,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:14:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-09-25 11:14:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1100. [2020-09-25 11:14:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2020-09-25 11:14:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1272 transitions. [2020-09-25 11:14:02,766 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1272 transitions. Word has length 171 [2020-09-25 11:14:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:02,766 INFO L479 AbstractCegarLoop]: Abstraction has 1100 states and 1272 transitions. [2020-09-25 11:14:02,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1272 transitions. [2020-09-25 11:14:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 11:14:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:02,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:02,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:02,774 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1177255036, now seen corresponding path program 1 times [2020-09-25 11:14:02,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:02,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428621870] [2020-09-25 11:14:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:07,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 11:14:07,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:14:07,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:07,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:14:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:14:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:14:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:14:08,292 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-09-25 11:14:08,497 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-09-25 11:14:08,622 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-25 11:14:08,767 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-25 11:14:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:09,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:09,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:09,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:14:09,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:09,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:14:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:09,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:09,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:14:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 11:14:09,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:09,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:14:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 11:14:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:09,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428621870] [2020-09-25 11:14:09,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:09,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 11:14:09,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168474335] [2020-09-25 11:14:09,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 11:14:09,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:09,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 11:14:09,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:14:09,802 INFO L87 Difference]: Start difference. First operand 1100 states and 1272 transitions. Second operand 20 states. [2020-09-25 11:14:11,358 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-09-25 11:14:11,620 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 11:14:12,009 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-09-25 11:14:12,769 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 11:14:12,937 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 11:14:13,475 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-09-25 11:14:14,119 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 11:14:14,299 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 11:14:14,757 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-09-25 11:14:14,961 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 11:14:15,530 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 11:14:15,903 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-25 11:14:16,642 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115