/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/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:17,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:17,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:17,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:17,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:17,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:17,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:17,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:17,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:17,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:17,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:17,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:17,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:17,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:17,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:17,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:17,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:17,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:17,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:17,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:17,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:17,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:17,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:17,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:17,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:17,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:17,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:17,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:17,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:17,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:17,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:17,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:17,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:17,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:17,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:17,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:17,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:17,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:17,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:17,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:17,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:17,783 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 07:52:17,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:17,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:17,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:17,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:17,814 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:17,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:17,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:17,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:17,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:17,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:17,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:17,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:17,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:17,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:17,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:17,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:17,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:17,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:17,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:17,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:17,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:17,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:17,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:17,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:17,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:17,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:17,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:17,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:17,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:17,819 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 07:52:18,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:18,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:18,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:18,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:18,313 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:18,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 07:52:18,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01bf801ea/8ed104494bce478f951d93e70f2d9d80/FLAG1c1221d31 [2020-09-25 07:52:19,052 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:19,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 07:52:19,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01bf801ea/8ed104494bce478f951d93e70f2d9d80/FLAG1c1221d31 [2020-09-25 07:52:19,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01bf801ea/8ed104494bce478f951d93e70f2d9d80 [2020-09-25 07:52:19,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:19,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:19,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:19,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:19,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:19,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:19" (1/1) ... [2020-09-25 07:52:19,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:19, skipping insertion in model container [2020-09-25 07:52:19,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:19" (1/1) ... [2020-09-25 07:52:19,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:19,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:19,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:19,942 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:20,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:20,191 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:20,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20 WrapperNode [2020-09-25 07:52:20,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:20,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:20,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:20,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:20,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (1/1) ... [2020-09-25 07:52:20,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:20,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:20,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:20,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:20,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (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 07:52:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:21,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:21,919 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:21,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:21 BoogieIcfgContainer [2020-09-25 07:52:21,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:21,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:21,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:21,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:21,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:19" (1/3) ... [2020-09-25 07:52:21,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:21, skipping insertion in model container [2020-09-25 07:52:21,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:20" (2/3) ... [2020-09-25 07:52:21,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:21, skipping insertion in model container [2020-09-25 07:52:21,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:21" (3/3) ... [2020-09-25 07:52:21,949 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 07:52:21,961 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:21,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:21,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:22,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:22,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:22,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:22,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:22,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:22,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:22,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:22,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 07:52:22,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:22,100 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] [2020-09-25 07:52:22,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:22,109 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 07:52:22,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:22,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 07:52:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:52:27,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:52:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:52:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:52:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 07:52:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:27,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:52:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:52:27,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:27,806 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 07:52:27,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 07:52:27,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:27,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:52:27,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419818339] [2020-09-25 07:52:27,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:27,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:27,846 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 07:52:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:30,133 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 07:52:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:30,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 07:52:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:30,180 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 07:52:30,180 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 07:52:30,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 07:52:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 07:52:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 07:52:30,300 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 07:52:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:30,301 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 07:52:30,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 07:52:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 07:52:30,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:30,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:30,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:30,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 07:52:30,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:30,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227349317] [2020-09-25 07:52:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 07:52:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:52:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:35,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:52:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:52:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:52:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:35,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:52:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:35,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:52:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:35,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:52:35,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:52:35,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:35,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:52:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:35,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227349317] [2020-09-25 07:52:35,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:35,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:35,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52166157] [2020-09-25 07:52:35,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:35,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:35,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:35,644 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 07:52:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:38,244 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 07:52:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:38,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 07:52:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:38,253 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 07:52:38,253 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 07:52:38,256 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 07:52:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 07:52:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 07:52:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 07:52:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 07:52:38,307 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 07:52:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:38,307 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 07:52:38,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 07:52:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:52:38,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:38,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:38,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:38,316 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:38,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 07:52:38,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:38,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913324998] [2020-09-25 07:52:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:43,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:52:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:52:43,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:52:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:43,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:43,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:52:43,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:43,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:43,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:43,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:52:43,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 07:52:43,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:43,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:52:43,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:43,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913324998] [2020-09-25 07:52:43,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:43,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:43,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086812234] [2020-09-25 07:52:43,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:43,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:43,705 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 7 states. [2020-09-25 07:52:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:45,989 INFO L93 Difference]: Finished difference Result 1633 states and 2009 transitions. [2020-09-25 07:52:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:45,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 07:52:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:45,996 INFO L225 Difference]: With dead ends: 1633 [2020-09-25 07:52:45,996 INFO L226 Difference]: Without dead ends: 899 [2020-09-25 07:52:45,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 07:52:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-09-25 07:52:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 812. [2020-09-25 07:52:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-09-25 07:52:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 948 transitions. [2020-09-25 07:52:46,032 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 948 transitions. Word has length 176 [2020-09-25 07:52:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:46,033 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 948 transitions. [2020-09-25 07:52:46,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 948 transitions. [2020-09-25 07:52:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 07:52:46,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:46,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:46,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:46,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1190688682, now seen corresponding path program 1 times [2020-09-25 07:52:46,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:46,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907357999] [2020-09-25 07:52:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:52:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:52:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:51,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:51,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:52:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 07:52:51,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:51,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:52:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:51,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907357999] [2020-09-25 07:52:51,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:51,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:52:51,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972371893] [2020-09-25 07:52:51,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:51,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:51,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:51,395 INFO L87 Difference]: Start difference. First operand 812 states and 948 transitions. Second operand 8 states. [2020-09-25 07:52:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:54,307 INFO L93 Difference]: Finished difference Result 2545 states and 3134 transitions. [2020-09-25 07:52:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:52:54,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-25 07:52:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:54,318 INFO L225 Difference]: With dead ends: 2545 [2020-09-25 07:52:54,318 INFO L226 Difference]: Without dead ends: 1757 [2020-09-25 07:52:54,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:52:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-09-25 07:52:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1610. [2020-09-25 07:52:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-25 07:52:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1903 transitions. [2020-09-25 07:52:54,388 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1903 transitions. Word has length 182 [2020-09-25 07:52:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:54,388 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1903 transitions. [2020-09-25 07:52:54,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1903 transitions. [2020-09-25 07:52:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 07:52:54,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:54,397 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 07:52:54,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:54,397 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:54,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:54,398 INFO L82 PathProgramCache]: Analyzing trace with hash -318750663, now seen corresponding path program 1 times [2020-09-25 07:52:54,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:54,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625650502] [2020-09-25 07:52:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 07:52:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:52:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:59,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:52:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 07:52:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:52:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:59,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625650502] [2020-09-25 07:52:59,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:59,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:59,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495662272] [2020-09-25 07:52:59,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:59,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:59,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:59,758 INFO L87 Difference]: Start difference. First operand 1610 states and 1903 transitions. Second operand 7 states. [2020-09-25 07:53:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:02,046 INFO L93 Difference]: Finished difference Result 3640 states and 4437 transitions. [2020-09-25 07:53:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:53:02,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 07:53:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:02,068 INFO L225 Difference]: With dead ends: 3640 [2020-09-25 07:53:02,068 INFO L226 Difference]: Without dead ends: 2054 [2020-09-25 07:53:02,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 07:53:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-09-25 07:53:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1940. [2020-09-25 07:53:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-09-25 07:53:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2304 transitions. [2020-09-25 07:53:02,169 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2304 transitions. Word has length 203 [2020-09-25 07:53:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:02,170 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2304 transitions. [2020-09-25 07:53:02,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:02,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2304 transitions. [2020-09-25 07:53:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 07:53:02,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:02,179 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, 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] [2020-09-25 07:53:02,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:02,180 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash -914003078, now seen corresponding path program 1 times [2020-09-25 07:53:02,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:02,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851480090] [2020-09-25 07:53:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 07:53:07,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-09-25 07:53:07,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:53:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:53:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:53:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:53:07,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:07,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:53:07,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:53:07,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:53:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:53:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:07,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:53:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:53:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:53:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:53:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:53:07,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851480090] [2020-09-25 07:53:07,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:07,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:53:07,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159331178] [2020-09-25 07:53:07,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:53:07,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:53:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:07,881 INFO L87 Difference]: Start difference. First operand 1940 states and 2304 transitions. Second operand 8 states.