/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=0.1 --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/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:34,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:34,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:34,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:34,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:34,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:34,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:34,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:34,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:34,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:34,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:34,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:34,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:34,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:34,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:34,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:34,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:34,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:34,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:34,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:34,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:34,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:34,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:34,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:34,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:34,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:34,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:34,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:34,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:34,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:34,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:34,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:34,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:34,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:34,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:34,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:34,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:34,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:34,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:34,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:34,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:34,151 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 10:12:34,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:34,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:34,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:34,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:34,212 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:34,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:34,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:34,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:34,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:34,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:34,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:34,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:34,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:34,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:34,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:34,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:34,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:34,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:34,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:34,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:34,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:34,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:34,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:34,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:34,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:34,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:34,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:34,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:34,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:34,219 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:12:34,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:34,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:34,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:34,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:34,707 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:34,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 10:12:34,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5652d6937/57b6294686f24bfab95396eb07b0daf7/FLAG3c0131137 [2020-09-25 10:12:35,511 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:35,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 10:12:35,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5652d6937/57b6294686f24bfab95396eb07b0daf7/FLAG3c0131137 [2020-09-25 10:12:35,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5652d6937/57b6294686f24bfab95396eb07b0daf7 [2020-09-25 10:12:35,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:35,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:35,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:35,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:35,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:35,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:35, skipping insertion in model container [2020-09-25 10:12:35,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:35" (1/1) ... [2020-09-25 10:12:35,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:35,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:36,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:36,279 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:36,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:36,518 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:36,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36 WrapperNode [2020-09-25 10:12:36,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:36,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:36,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:36,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:36,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (1/1) ... [2020-09-25 10:12:36,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:36,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:36,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:36,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:36,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (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 10:12:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:36,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:38,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:38,343 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:38,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:38 BoogieIcfgContainer [2020-09-25 10:12:38,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:38,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:38,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:38,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:38,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:35" (1/3) ... [2020-09-25 10:12:38,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:38, skipping insertion in model container [2020-09-25 10:12:38,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:36" (2/3) ... [2020-09-25 10:12:38,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:38, skipping insertion in model container [2020-09-25 10:12:38,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:38" (3/3) ... [2020-09-25 10:12:38,363 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 10:12:38,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:38,389 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:38,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:38,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:38,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:38,448 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:38,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:38,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:38,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:38,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:38,449 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 10:12:38,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:38,496 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] [2020-09-25 10:12:38,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 10:12:38,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:38,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 10:12:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 10:12:39,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-09-25 10:12:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:12:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:39,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:39,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:12:39,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:39,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:40,021 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 10:12:40,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 10:12:40,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:40,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:40,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982102566] [2020-09-25 10:12:40,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:40,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:40,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:40,057 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:42,234 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 10:12:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:42,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 10:12:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:42,260 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 10:12:42,260 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 10:12:42,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 10:12:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 10:12:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 10:12:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 10:12:42,381 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 10:12:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:42,382 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 10:12:42,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 10:12:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 10:12:42,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:42,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:42,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:42,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:42,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 10:12:42,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:42,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604976542] [2020-09-25 10:12:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:47,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 10:12:47,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:12:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:47,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:47,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:12:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:47,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:48,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:48,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:48,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 10:12:48,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:48,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:48,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:48,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:12:48,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:48,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604976542] [2020-09-25 10:12:48,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:48,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:12:48,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964970155] [2020-09-25 10:12:48,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:12:48,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:48,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:12:48,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:48,238 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 11 states. [2020-09-25 10:12:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:51,331 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 10:12:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:51,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-09-25 10:12:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:51,339 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 10:12:51,340 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 10:12:51,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 10:12:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 10:12:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 10:12:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 10:12:51,386 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 140 [2020-09-25 10:12:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:51,387 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 10:12:51,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:12:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 10:12:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 10:12:51,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:51,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:51,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:51,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 10:12:51,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:51,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401130293] [2020-09-25 10:12:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 10:12:56,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4868 [2020-09-25 10:12:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:56,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:12:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:12:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:56,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:56,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:56,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:12:56,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:56,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:56,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:56,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 10:12:56,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:56,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:12:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:56,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401130293] [2020-09-25 10:12:56,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:56,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:56,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73944936] [2020-09-25 10:12:56,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:56,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:56,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:56,677 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 6 states. [2020-09-25 10:12:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:58,450 INFO L93 Difference]: Finished difference Result 1209 states and 1543 transitions. [2020-09-25 10:12:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:12:58,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-09-25 10:12:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:58,461 INFO L225 Difference]: With dead ends: 1209 [2020-09-25 10:12:58,461 INFO L226 Difference]: Without dead ends: 1207 [2020-09-25 10:12:58,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 10:12:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-09-25 10:12:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 861. [2020-09-25 10:12:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-25 10:12:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1083 transitions. [2020-09-25 10:12:58,532 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1083 transitions. Word has length 140 [2020-09-25 10:12:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:58,534 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1083 transitions. [2020-09-25 10:12:58,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1083 transitions. [2020-09-25 10:12:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:12:58,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:58,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:58,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:58,549 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 10:12:58,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:58,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723538874] [2020-09-25 10:12:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:02,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:02,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:13:02,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4371 [2020-09-25 10:13:02,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:02,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:13:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:03,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:03,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:13:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:03,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:03,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:03,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:03,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 10:13:03,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:03,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:03,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723538874] [2020-09-25 10:13:03,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:03,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:03,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906975485] [2020-09-25 10:13:03,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:03,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:03,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:03,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:03,357 INFO L87 Difference]: Start difference. First operand 861 states and 1083 transitions. Second operand 8 states. [2020-09-25 10:13:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:06,648 INFO L93 Difference]: Finished difference Result 2780 states and 3727 transitions. [2020-09-25 10:13:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:06,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 10:13:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:06,664 INFO L225 Difference]: With dead ends: 2780 [2020-09-25 10:13:06,665 INFO L226 Difference]: Without dead ends: 1934 [2020-09-25 10:13:06,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-09-25 10:13:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1682. [2020-09-25 10:13:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-09-25 10:13:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2222 transitions. [2020-09-25 10:13:06,748 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2222 transitions. Word has length 146 [2020-09-25 10:13:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:06,748 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2222 transitions. [2020-09-25 10:13:06,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2222 transitions. [2020-09-25 10:13:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 10:13:06,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:06,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:06,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:06,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-09-25 10:13:06,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:06,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923033303] [2020-09-25 10:13:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:11,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:11,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 10:13:11,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:11,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:13:11,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:11,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:11,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:13:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:12,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:12,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:12,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:13:12,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:12,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:12,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:12,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:12,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:13:12,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 10:13:12,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:12,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:13:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:12,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923033303] [2020-09-25 10:13:12,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:12,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:12,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449771474] [2020-09-25 10:13:12,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:12,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:12,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:12,656 INFO L87 Difference]: Start difference. First operand 1682 states and 2222 transitions. Second operand 10 states. [2020-09-25 10:13:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:16,039 INFO L93 Difference]: Finished difference Result 4156 states and 5610 transitions. [2020-09-25 10:13:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:16,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 10:13:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:16,055 INFO L225 Difference]: With dead ends: 4156 [2020-09-25 10:13:16,056 INFO L226 Difference]: Without dead ends: 2611 [2020-09-25 10:13:16,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:13:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-09-25 10:13:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2439. [2020-09-25 10:13:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2439 states. [2020-09-25 10:13:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 3142 transitions. [2020-09-25 10:13:16,154 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 3142 transitions. Word has length 179 [2020-09-25 10:13:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:16,155 INFO L479 AbstractCegarLoop]: Abstraction has 2439 states and 3142 transitions. [2020-09-25 10:13:16,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:16,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 3142 transitions. [2020-09-25 10:13:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 10:13:16,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:16,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:16,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:16,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:16,160 INFO L82 PathProgramCache]: Analyzing trace with hash -744492161, now seen corresponding path program 1 times [2020-09-25 10:13:16,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:16,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676145766] [2020-09-25 10:13:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:20,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:13:20,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4488 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 10:13:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:20,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:20,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:20,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:20,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 10:13:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:13:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:21,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676145766] [2020-09-25 10:13:21,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:21,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:13:21,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438422102] [2020-09-25 10:13:21,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:13:21,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:21,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:13:21,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:21,282 INFO L87 Difference]: Start difference. First operand 2439 states and 3142 transitions. Second operand 10 states. [2020-09-25 10:13:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:23,390 INFO L93 Difference]: Finished difference Result 4744 states and 6116 transitions. [2020-09-25 10:13:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:23,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-09-25 10:13:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:23,406 INFO L225 Difference]: With dead ends: 4744 [2020-09-25 10:13:23,406 INFO L226 Difference]: Without dead ends: 2439 [2020-09-25 10:13:23,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:13:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-09-25 10:13:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2435. [2020-09-25 10:13:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-09-25 10:13:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 3124 transitions. [2020-09-25 10:13:23,489 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 3124 transitions. Word has length 184 [2020-09-25 10:13:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:23,489 INFO L479 AbstractCegarLoop]: Abstraction has 2435 states and 3124 transitions. [2020-09-25 10:13:23,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:13:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 3124 transitions. [2020-09-25 10:13:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:13:23,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:23,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:23,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:13:23,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:23,495 INFO L82 PathProgramCache]: Analyzing trace with hash -94451881, now seen corresponding path program 1 times [2020-09-25 10:13:23,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:23,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348799220] [2020-09-25 10:13:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat