/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:48,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:48,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:48,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:48,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:48,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:48,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:48,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:48,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:48,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:48,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:48,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:48,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:48,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:48,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:48,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:48,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:48,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:48,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:48,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:48,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:48,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:48,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:48,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:48,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:48,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:48,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:48,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:48,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:48,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:48,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:48,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:48,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:48,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:48,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:48,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:48,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:48,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:48,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:48,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:48,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:48,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:36:48,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:48,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:48,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:48,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:48,252 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:48,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:48,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:48,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:48,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:48,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:48,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:48,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:48,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:48,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:48,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:48,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:48,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:48,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:48,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:48,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:48,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:48,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:48,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:48,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:48,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:48,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:48,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:48,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:48,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:48,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:48,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 14:36:48,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc9e048/1c26f81fe18347668a262606e65d4e7b/FLAGb28c387e0 [2020-09-25 14:36:49,459 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:49,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 14:36:49,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc9e048/1c26f81fe18347668a262606e65d4e7b/FLAGb28c387e0 [2020-09-25 14:36:49,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bc9e048/1c26f81fe18347668a262606e65d4e7b [2020-09-25 14:36:49,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:49,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:49,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:49,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:49,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:49,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:49" (1/1) ... [2020-09-25 14:36:49,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1003e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:49, skipping insertion in model container [2020-09-25 14:36:49,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:49" (1/1) ... [2020-09-25 14:36:49,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:49,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:50,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,314 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:50,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,601 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:50,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50 WrapperNode [2020-09-25 14:36:50,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:50,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:50,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:50,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:50,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:50,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:50,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:50,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:52,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:52,163 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:52,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52 BoogieIcfgContainer [2020-09-25 14:36:52,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:52,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:52,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:52,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:52,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:49" (1/3) ... [2020-09-25 14:36:52,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e9a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (2/3) ... [2020-09-25 14:36:52,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e9a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52" (3/3) ... [2020-09-25 14:36:52,191 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 14:36:52,203 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:52,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:52,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:52,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:52,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:52,288 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:52,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:52,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:52,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:52,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:52,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 14:36:52,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:52,347 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, 1, 1, 1] [2020-09-25 14:36:52,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 14:36:52,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:52,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728095523] [2020-09-25 14:36:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:36:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:36:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:57,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:36:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:36:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:36:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:58,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:36:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:58,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728095523] [2020-09-25 14:36:58,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:58,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:58,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182119982] [2020-09-25 14:36:58,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:58,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:58,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:58,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:58,211 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:00,268 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 14:37:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:00,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 14:37:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:00,296 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 14:37:00,297 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 14:37:00,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 14:37:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 14:37:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 14:37:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 14:37:00,419 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 144 [2020-09-25 14:37:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:00,421 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 14:37:00,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 14:37:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:37:00,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:00,432 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 14:37:00,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:00,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:00,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:00,434 INFO L82 PathProgramCache]: Analyzing trace with hash -770413602, now seen corresponding path program 1 times [2020-09-25 14:37:00,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:00,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149776656] [2020-09-25 14:37:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:05,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:37:05,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 14:37:05,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:05,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:37:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:37:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:05,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:05,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:05,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:37:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:05,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:05,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:37:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:37:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:06,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149776656] [2020-09-25 14:37:06,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:06,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:06,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11997146] [2020-09-25 14:37:06,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:06,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:06,018 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 14:37:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:08,073 INFO L93 Difference]: Finished difference Result 1526 states and 1859 transitions. [2020-09-25 14:37:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:08,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 14:37:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:08,088 INFO L225 Difference]: With dead ends: 1526 [2020-09-25 14:37:08,088 INFO L226 Difference]: Without dead ends: 947 [2020-09-25 14:37:08,094 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 14:37:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-25 14:37:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 891. [2020-09-25 14:37:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1072 transitions. [2020-09-25 14:37:08,161 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1072 transitions. Word has length 165 [2020-09-25 14:37:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:08,163 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1072 transitions. [2020-09-25 14:37:08,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1072 transitions. [2020-09-25 14:37:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 14:37:08,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:08,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:08,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:08,174 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1245952227, now seen corresponding path program 1 times [2020-09-25 14:37:08,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982575356] [2020-09-25 14:37:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 14:37:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:37:13,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:37:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:37:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 14:37:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:13,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:37:13,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:37:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 14:37:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:37:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:37:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:14,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982575356] [2020-09-25 14:37:14,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:14,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 14:37:14,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634487569] [2020-09-25 14:37:14,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 14:37:14,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:14,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 14:37:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:37:14,465 INFO L87 Difference]: Start difference. First operand 891 states and 1072 transitions. Second operand 20 states. [2020-09-25 14:37:15,376 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 14:37:15,655 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 14:37:16,081 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-25 14:37:16,274 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-09-25 14:37:16,650 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-25 14:37:17,031 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-25 14:37:18,164 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 14:37:18,468 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 14:37:18,970 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-09-25 14:37:20,115 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-25 14:37:20,489 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 14:37:20,947 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-09-25 14:37:21,307 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-09-25 14:37:21,568 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-09-25 14:37:22,537 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 14:37:22,845 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-09-25 14:37:23,675 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-09-25 14:37:23,919 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-09-25 14:37:24,617 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-09-25 14:37:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:25,582 INFO L93 Difference]: Finished difference Result 2207 states and 2809 transitions. [2020-09-25 14:37:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 14:37:25,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 166 [2020-09-25 14:37:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:25,594 INFO L225 Difference]: With dead ends: 2207 [2020-09-25 14:37:25,594 INFO L226 Difference]: Without dead ends: 1340 [2020-09-25 14:37:25,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=720, Invalid=1830, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 14:37:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-09-25 14:37:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1256. [2020-09-25 14:37:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-09-25 14:37:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1430 transitions. [2020-09-25 14:37:25,657 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1430 transitions. Word has length 166 [2020-09-25 14:37:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:25,658 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 1430 transitions. [2020-09-25 14:37:25,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 14:37:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1430 transitions. [2020-09-25 14:37:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:37:25,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:25,665 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, 1, 1, 1] [2020-09-25 14:37:25,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:25,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1093248032, now seen corresponding path program 1 times [2020-09-25 14:37:25,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:25,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047431070] [2020-09-25 14:37:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 14:37:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:37:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:30,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:37:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 14:37:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:37:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:30,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:30,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:30,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:37:30,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:30,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:30,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:31,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:37:31,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 14:37:31,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:31,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:37:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:37:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:31,553 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 14:37:31,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047431070] [2020-09-25 14:37:31,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:31,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:37:31,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295484816] [2020-09-25 14:37:31,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:37:31,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:31,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:37:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:37:31,557 INFO L87 Difference]: Start difference. First operand 1256 states and 1430 transitions. Second operand 10 states. [2020-09-25 14:37:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:35,188 INFO L93 Difference]: Finished difference Result 3322 states and 3928 transitions. [2020-09-25 14:37:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:37:35,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 181 [2020-09-25 14:37:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:35,200 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 14:37:35,200 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 14:37:35,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:37:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 14:37:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1688. [2020-09-25 14:37:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-09-25 14:37:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 1923 transitions. [2020-09-25 14:37:35,263 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 1923 transitions. Word has length 181 [2020-09-25 14:37:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:35,264 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 1923 transitions. [2020-09-25 14:37:35,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:37:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 1923 transitions. [2020-09-25 14:37:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 14:37:35,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:35,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:35,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:35,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1621154070, now seen corresponding path program 1 times [2020-09-25 14:37:35,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:35,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709110897] [2020-09-25 14:37:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:35,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking...