/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:50,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:50,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:50,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:50,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:50,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:50,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:50,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:50,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:50,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:50,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:50,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:50,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:50,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:50,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:50,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:50,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:50,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:50,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:50,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:50,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:50,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:50,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:50,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:50,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:50,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:50,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:50,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:50,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:50,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:50,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:50,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:50,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:50,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:50,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:50,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:50,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:50,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:50,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:50,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:50,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:50,101 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 07:52:50,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:50,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:50,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:50,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:50,148 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:50,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:50,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:50,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:50,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:50,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:50,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:50,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:50,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:50,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:50,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:50,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:50,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:50,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:50,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:50,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:50,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:50,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:50,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:50,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:50,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:50,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:50,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:50,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:50,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:50,155 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:50,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:50,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:50,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:50,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:50,624 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:50,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 07:52:50,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/065e4d6b0/241ae98fec354cf39ae4ee0eec5c5f1b/FLAG9699530c0 [2020-09-25 07:52:51,412 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:51,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 07:52:51,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/065e4d6b0/241ae98fec354cf39ae4ee0eec5c5f1b/FLAG9699530c0 [2020-09-25 07:52:51,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/065e4d6b0/241ae98fec354cf39ae4ee0eec5c5f1b [2020-09-25 07:52:51,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:51,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:51,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:51,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:51,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:51,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:51" (1/1) ... [2020-09-25 07:52:51,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:51, skipping insertion in model container [2020-09-25 07:52:51,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:51" (1/1) ... [2020-09-25 07:52:51,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:51,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:52,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:52,177 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:52,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:52,455 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:52,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52 WrapperNode [2020-09-25 07:52:52,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:52,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:52,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:52,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:52,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:52,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:52,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:52,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:52,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (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 07:52:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:52,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:52,679 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:54,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:54,089 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:54,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:54 BoogieIcfgContainer [2020-09-25 07:52:54,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:54,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:54,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:54,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:54,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:51" (1/3) ... [2020-09-25 07:52:54,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:54, skipping insertion in model container [2020-09-25 07:52:54,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (2/3) ... [2020-09-25 07:52:54,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:54, skipping insertion in model container [2020-09-25 07:52:54,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:54" (3/3) ... [2020-09-25 07:52:54,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-25 07:52:54,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:54,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:54,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:54,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:54,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:54,196 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:54,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:54,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:54,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:54,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:54,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:52:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:52:54,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:54,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:54,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-25 07:52:54,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:54,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 07:52:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:52:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:52:59,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 07:52:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:52:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:59,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:59,960 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 07:52:59,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 07:52:59,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:59,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:52:59,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581761471] [2020-09-25 07:52:59,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:59,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:59,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:59,999 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:53:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:03,170 INFO L93 Difference]: Finished difference Result 1420 states and 2015 transitions. [2020-09-25 07:53:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:53:03,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 07:53:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:03,211 INFO L225 Difference]: With dead ends: 1420 [2020-09-25 07:53:03,211 INFO L226 Difference]: Without dead ends: 837 [2020-09-25 07:53:03,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-25 07:53:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 774. [2020-09-25 07:53:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-09-25 07:53:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 946 transitions. [2020-09-25 07:53:03,338 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 946 transitions. Word has length 165 [2020-09-25 07:53:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:03,340 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 946 transitions. [2020-09-25 07:53:03,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 946 transitions. [2020-09-25 07:53:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 07:53:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:03,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:03,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:53:03,358 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:03,359 INFO L82 PathProgramCache]: Analyzing trace with hash 938728200, now seen corresponding path program 1 times [2020-09-25 07:53:03,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:03,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194804509] [2020-09-25 07:53:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:08,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 07:53:08,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:53:08,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:53:08,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:08,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:53:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 07:53:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:53:08,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:08,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:08,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:53:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:08,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:53:08,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:53:08,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:08,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:08,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:53:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:08,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194804509] [2020-09-25 07:53:08,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:08,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:08,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524369385] [2020-09-25 07:53:08,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:08,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:08,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:08,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:08,810 INFO L87 Difference]: Start difference. First operand 774 states and 946 transitions. Second operand 5 states. [2020-09-25 07:53:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:10,750 INFO L93 Difference]: Finished difference Result 1990 states and 2530 transitions. [2020-09-25 07:53:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:10,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-25 07:53:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:10,760 INFO L225 Difference]: With dead ends: 1990 [2020-09-25 07:53:10,760 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 07:53:10,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 07:53:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1228. [2020-09-25 07:53:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-09-25 07:53:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1542 transitions. [2020-09-25 07:53:10,820 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1542 transitions. Word has length 187 [2020-09-25 07:53:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:10,821 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1542 transitions. [2020-09-25 07:53:10,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1542 transitions. [2020-09-25 07:53:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 07:53:10,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:10,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:10,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:53:10,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 817937001, now seen corresponding path program 1 times [2020-09-25 07:53:10,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:10,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388291178] [2020-09-25 07:53:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 07:53:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:53:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 07:53:15,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:15,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:53:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:53:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:53:16,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:16,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:53:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:16,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:16,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:53:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:16,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:16,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:53:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:53:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:53:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:53:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:16,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:53:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:53:16,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388291178] [2020-09-25 07:53:16,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:16,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:16,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960423457] [2020-09-25 07:53:16,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:16,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:16,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:16,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:16,328 INFO L87 Difference]: Start difference. First operand 1228 states and 1542 transitions. Second operand 7 states. [2020-09-25 07:53:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:18,736 INFO L93 Difference]: Finished difference Result 3067 states and 3976 transitions. [2020-09-25 07:53:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:53:18,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-25 07:53:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:18,754 INFO L225 Difference]: With dead ends: 3067 [2020-09-25 07:53:18,754 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 07:53:18,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:53:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 07:53:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1851. [2020-09-25 07:53:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-09-25 07:53:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2293 transitions. [2020-09-25 07:53:18,839 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2293 transitions. Word has length 229 [2020-09-25 07:53:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:18,840 INFO L479 AbstractCegarLoop]: Abstraction has 1851 states and 2293 transitions. [2020-09-25 07:53:18,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2293 transitions. [2020-09-25 07:53:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 07:53:18,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:18,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:18,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:18,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash 981934836, now seen corresponding path program 1 times [2020-09-25 07:53:18,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:18,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737963114] [2020-09-25 07:53:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:53:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-25 07:53:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:24,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:24,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:24,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:53:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:24,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:24,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:53:24,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:53:24,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:24,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:24,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:53:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:53:24,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:24,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:53:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:53:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:24,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:24,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:53:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:53:24,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:24,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:24,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:53:24,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 07:53:24,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737963114] [2020-09-25 07:53:24,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:24,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:53:24,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410662760] [2020-09-25 07:53:24,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:53:24,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:53:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:24,353 INFO L87 Difference]: Start difference. First operand 1851 states and 2293 transitions. Second operand 8 states. [2020-09-25 07:53:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:27,148 INFO L93 Difference]: Finished difference Result 4440 states and 5476 transitions. [2020-09-25 07:53:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:53:27,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 247 [2020-09-25 07:53:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:27,164 INFO L225 Difference]: With dead ends: 4440 [2020-09-25 07:53:27,164 INFO L226 Difference]: Without dead ends: 2611 [2020-09-25 07:53:27,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:53:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-09-25 07:53:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1845. [2020-09-25 07:53:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2020-09-25 07:53:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2155 transitions. [2020-09-25 07:53:27,254 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2155 transitions. Word has length 247 [2020-09-25 07:53:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:27,254 INFO L479 AbstractCegarLoop]: Abstraction has 1845 states and 2155 transitions. [2020-09-25 07:53:27,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:53:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2155 transitions. [2020-09-25 07:53:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 07:53:27,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:27,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:27,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:27,264 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:27,265 INFO L82 PathProgramCache]: Analyzing trace with hash -943856275, now seen corresponding path program 1 times [2020-09-25 07:53:27,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:27,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570663668] [2020-09-25 07:53:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:32,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 07:53:32,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:53:32,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:32,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:32,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:32,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:53:32,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:53:32,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:32,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:32,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:53:32,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:32,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:53:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:53:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 07:53:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:53:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 07:53:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:32,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:53:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:32,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:32,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:53:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:53:32,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570663668] [2020-09-25 07:53:32,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:32,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:32,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088859588] [2020-09-25 07:53:32,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:32,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:32,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:32,682 INFO L87 Difference]: Start difference. First operand 1845 states and 2155 transitions. Second operand 7 states. [2020-09-25 07:53:35,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:35,974 INFO L93 Difference]: Finished difference Result 5271 states and 6240 transitions. [2020-09-25 07:53:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:53:35,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-09-25 07:53:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:35,991 INFO L225 Difference]: With dead ends: 5271 [2020-09-25 07:53:35,991 INFO L226 Difference]: Without dead ends: 3261 [2020-09-25 07:53:35,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:53:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2020-09-25 07:53:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3071. [2020-09-25 07:53:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3071 states. [2020-09-25 07:53:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 3536 transitions. [2020-09-25 07:53:36,089 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 3536 transitions. Word has length 259 [2020-09-25 07:53:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:36,089 INFO L479 AbstractCegarLoop]: Abstraction has 3071 states and 3536 transitions. [2020-09-25 07:53:36,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 3536 transitions. [2020-09-25 07:53:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 07:53:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:36,101 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:36,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:36,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash 238182508, now seen corresponding path program 1 times [2020-09-25 07:53:36,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:36,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695197656] [2020-09-25 07:53:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking...