/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:33,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:33,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:33,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:33,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:33,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:33,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:33,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:33,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:33,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:33,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:33,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:33,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:33,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:33,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:33,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:33,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:33,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:33,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:33,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:33,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:33,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:33,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:33,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:33,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:33,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:33,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:33,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:33,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:33,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:33,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:33,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:33,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:33,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:33,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:33,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:33,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:33,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:33,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:33,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:33,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:33,207 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 12:24:33,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:33,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:33,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:33,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:33,256 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:33,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:33,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:33,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:33,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:33,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:33,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:33,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:33,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:33,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:33,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:33,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:33,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:33,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:33,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:33,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:33,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:33,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:33,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:33,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:33,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:33,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:33,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:33,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:33,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:33,262 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:24:33,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:33,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:33,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:33,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:33,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:33,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 12:24:33,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25e5c5130/8a57cf10e761497a9f150c27b85ae7e6/FLAG8aeb277d7 [2020-09-25 12:24:34,422 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:34,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 12:24:34,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25e5c5130/8a57cf10e761497a9f150c27b85ae7e6/FLAG8aeb277d7 [2020-09-25 12:24:34,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25e5c5130/8a57cf10e761497a9f150c27b85ae7e6 [2020-09-25 12:24:34,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:34,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:34,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:34,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:34,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:34,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:34" (1/1) ... [2020-09-25 12:24:34,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:34, skipping insertion in model container [2020-09-25 12:24:34,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:34" (1/1) ... [2020-09-25 12:24:34,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:34,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:35,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:35,332 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:35,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:35,564 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:35,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35 WrapperNode [2020-09-25 12:24:35,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:35,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:35,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:35,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:35,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (1/1) ... [2020-09-25 12:24:35,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:35,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:35,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:35,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:35,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (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 12:24:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:35,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:35,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:37,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:37,231 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:37,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:37 BoogieIcfgContainer [2020-09-25 12:24:37,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:37,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:37,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:37,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:37,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:34" (1/3) ... [2020-09-25 12:24:37,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:37, skipping insertion in model container [2020-09-25 12:24:37,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:35" (2/3) ... [2020-09-25 12:24:37,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:37, skipping insertion in model container [2020-09-25 12:24:37,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:37" (3/3) ... [2020-09-25 12:24:37,261 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 12:24:37,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:37,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:37,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:37,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:37,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:37,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:37,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:37,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:37,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:37,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:37,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 12:24:37,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:37,439 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] [2020-09-25 12:24:37,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:37,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 12:24:37,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:37,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 12:24:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 12:24:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:24:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:24:42,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:42,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:24:42,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 12:24:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:24:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:42,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:24:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:42,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:24:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:43,026 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 12:24:43,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 12:24:43,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:24:43,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:24:43,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268388938] [2020-09-25 12:24:43,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:24:43,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:24:43,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:24:43,062 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:24:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:45,400 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 12:24:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:24:45,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 12:24:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:45,442 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 12:24:45,442 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 12:24:45,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 12:24:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 12:24:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 12:24:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 12:24:45,583 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 124 [2020-09-25 12:24:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:45,584 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 12:24:45,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:24:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 12:24:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:24:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:45,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:45,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:24:45,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1775646540, now seen corresponding path program 1 times [2020-09-25 12:24:45,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:45,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888080754] [2020-09-25 12:24:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 12:24:49,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:24:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3866 [2020-09-25 12:24:49,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:49,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:24:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 12:24:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:49,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:24:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:49,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:24:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:24:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:49,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:24:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:49,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888080754] [2020-09-25 12:24:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:49,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:24:49,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664120264] [2020-09-25 12:24:49,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:24:49,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:49,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:24:49,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:49,804 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-25 12:24:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:52,040 INFO L93 Difference]: Finished difference Result 1865 states and 2456 transitions. [2020-09-25 12:24:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:24:52,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 12:24:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:52,049 INFO L225 Difference]: With dead ends: 1865 [2020-09-25 12:24:52,050 INFO L226 Difference]: Without dead ends: 1272 [2020-09-25 12:24:52,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:24:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-25 12:24:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1225. [2020-09-25 12:24:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-09-25 12:24:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1534 transitions. [2020-09-25 12:24:52,123 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1534 transitions. Word has length 158 [2020-09-25 12:24:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:52,124 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1534 transitions. [2020-09-25 12:24:52,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:24:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1534 transitions. [2020-09-25 12:24:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:24:52,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:52,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:52,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:24:52,132 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash 313926274, now seen corresponding path program 1 times [2020-09-25 12:24:52,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:52,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066114771] [2020-09-25 12:24:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:52,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:57,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:24:57,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:24:57,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:57,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:24:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:24:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:24:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:24:58,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:24:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:58,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:24:58,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:24:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:58,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:24:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:58,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066114771] [2020-09-25 12:24:58,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:58,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:24:58,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219320881] [2020-09-25 12:24:58,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:24:58,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:24:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:24:58,440 INFO L87 Difference]: Start difference. First operand 1225 states and 1534 transitions. Second operand 16 states. [2020-09-25 12:25:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:03,328 INFO L93 Difference]: Finished difference Result 4357 states and 5822 transitions. [2020-09-25 12:25:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:25:03,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-09-25 12:25:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:03,364 INFO L225 Difference]: With dead ends: 4357 [2020-09-25 12:25:03,364 INFO L226 Difference]: Without dead ends: 3154 [2020-09-25 12:25:03,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:25:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2020-09-25 12:25:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 2720. [2020-09-25 12:25:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2720 states. [2020-09-25 12:25:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3456 transitions. [2020-09-25 12:25:03,493 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3456 transitions. Word has length 168 [2020-09-25 12:25:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:03,493 INFO L479 AbstractCegarLoop]: Abstraction has 2720 states and 3456 transitions. [2020-09-25 12:25:03,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:25:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3456 transitions. [2020-09-25 12:25:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 12:25:03,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:03,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:25:03,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:03,507 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1808172842, now seen corresponding path program 1 times [2020-09-25 12:25:03,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:03,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253755478] [2020-09-25 12:25:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 12:25:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:25:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 12:25:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:25:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:08,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:25:08,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:25:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:25:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:25:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:25:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:08,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:25:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:25:08,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253755478] [2020-09-25 12:25:08,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:08,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:08,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917061915] [2020-09-25 12:25:08,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:08,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:08,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:08,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:08,896 INFO L87 Difference]: Start difference. First operand 2720 states and 3456 transitions. Second operand 5 states. [2020-09-25 12:25:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:10,677 INFO L93 Difference]: Finished difference Result 6344 states and 8224 transitions. [2020-09-25 12:25:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:10,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-25 12:25:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:10,698 INFO L225 Difference]: With dead ends: 6344 [2020-09-25 12:25:10,698 INFO L226 Difference]: Without dead ends: 3646 [2020-09-25 12:25:10,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 12:25:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2020-09-25 12:25:10,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3469. [2020-09-25 12:25:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3469 states. [2020-09-25 12:25:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 4434 transitions. [2020-09-25 12:25:10,819 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 4434 transitions. Word has length 186 [2020-09-25 12:25:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:10,819 INFO L479 AbstractCegarLoop]: Abstraction has 3469 states and 4434 transitions. [2020-09-25 12:25:10,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 4434 transitions. [2020-09-25 12:25:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 12:25:10,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:10,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:10,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:10,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:10,835 INFO L82 PathProgramCache]: Analyzing trace with hash -779908078, now seen corresponding path program 1 times [2020-09-25 12:25:10,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:10,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053232234] [2020-09-25 12:25:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 12:25:15,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:25:15,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:15,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:25:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:25:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-09-25 12:25:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:25:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:16,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:25:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:16,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053232234] [2020-09-25 12:25:16,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:16,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:25:16,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470046181] [2020-09-25 12:25:16,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:25:16,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:16,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:25:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:25:16,854 INFO L87 Difference]: Start difference. First operand 3469 states and 4434 transitions. Second operand 13 states.