/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:49,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:49,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:49,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:49,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:49,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:49,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:49,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:49,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:49,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:49,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:49,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:49,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:49,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:49,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:49,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:49,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:49,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:49,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:49,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:49,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:49,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:49,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:49,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:49,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:49,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:49,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:49,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:49,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:49,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:49,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:49,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:49,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:49,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:49,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:49,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:49,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:49,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:49,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:49,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:49,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:49,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:42:49,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:49,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:49,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:49,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:49,287 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:49,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:49,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:49,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:49,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:49,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:49,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:49,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:49,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:49,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:49,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:49,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:49,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:49,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:49,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:49,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:49,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:49,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:49,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:49,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:49,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:49,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:49,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:49,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:49,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:49,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:42:49,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:49,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:49,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:49,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:49,820 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:49,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 14:42:49,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc013c6d7/c99baa8cd6514ffa9bb13225ba7e83cb/FLAG69c7c2a91 [2020-09-25 14:42:50,576 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:50,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 14:42:50,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc013c6d7/c99baa8cd6514ffa9bb13225ba7e83cb/FLAG69c7c2a91 [2020-09-25 14:42:50,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc013c6d7/c99baa8cd6514ffa9bb13225ba7e83cb [2020-09-25 14:42:50,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:50,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:50,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:50,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:50,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:50,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:50" (1/1) ... [2020-09-25 14:42:50,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ec4735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:50, skipping insertion in model container [2020-09-25 14:42:50,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:50" (1/1) ... [2020-09-25 14:42:50,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:50,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:51,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:51,590 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:51,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:51,727 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:51,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51 WrapperNode [2020-09-25 14:42:51,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:51,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:51,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:51,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:51,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... [2020-09-25 14:42:51,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:51,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:51,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:51,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:51,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:51,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:51,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:51,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:51,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:51,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:51,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:53,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:53,505 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:53,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:53 BoogieIcfgContainer [2020-09-25 14:42:53,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:53,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:53,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:53,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:53,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:50" (1/3) ... [2020-09-25 14:42:53,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ca033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:53, skipping insertion in model container [2020-09-25 14:42:53,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:51" (2/3) ... [2020-09-25 14:42:53,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200ca033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:53, skipping insertion in model container [2020-09-25 14:42:53,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:53" (3/3) ... [2020-09-25 14:42:53,524 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 14:42:53,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:53,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:53,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:53,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:53,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:53,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:53,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:53,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:53,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:53,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:53,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 14:42:53,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:53,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:53,657 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 14:42:53,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:53,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429569316] [2020-09-25 14:42:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:54,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 14:42:54,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-25 14:42:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:54,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:42:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:42:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:55,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429569316] [2020-09-25 14:42:55,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:55,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:55,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876814586] [2020-09-25 14:42:55,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:55,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:55,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:55,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:55,124 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:57,332 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 14:42:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:57,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 14:42:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:57,358 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 14:42:57,358 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 14:42:57,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 14:42:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 14:42:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 14:42:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 14:42:57,471 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 14:42:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:57,472 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 14:42:57,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 14:42:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:42:57,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:57,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:57,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:57,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 14:42:57,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:57,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139049021] [2020-09-25 14:42:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:57,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:43:02,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:43:02,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:02,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:43:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:02,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:02,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:02,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 14:43:02,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:02,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:02,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:03,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139049021] [2020-09-25 14:43:03,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:03,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933014989] [2020-09-25 14:43:03,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:03,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:03,044 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 14:43:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:05,179 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 14:43:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:43:05,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 14:43:05,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:05,184 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 14:43:05,185 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 14:43:05,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 14:43:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 14:43:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 14:43:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 14:43:05,224 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 140 [2020-09-25 14:43:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:05,225 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 14:43:05,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 14:43:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:43:05,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:05,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:05,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:05,232 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 14:43:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254764191] [2020-09-25 14:43:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:10,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:43:10,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:43:10,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:43:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:10,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:10,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:10,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 14:43:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:10,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:10,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254764191] [2020-09-25 14:43:10,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:10,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:10,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811453025] [2020-09-25 14:43:10,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:10,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:10,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:10,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:10,645 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 14:43:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,899 INFO L93 Difference]: Finished difference Result 1822 states and 2354 transitions. [2020-09-25 14:43:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:12,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 14:43:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,907 INFO L225 Difference]: With dead ends: 1822 [2020-09-25 14:43:12,907 INFO L226 Difference]: Without dead ends: 1106 [2020-09-25 14:43:12,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-09-25 14:43:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1050. [2020-09-25 14:43:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-09-25 14:43:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1254 transitions. [2020-09-25 14:43:12,968 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1254 transitions. Word has length 140 [2020-09-25 14:43:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,970 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1254 transitions. [2020-09-25 14:43:12,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1254 transitions. [2020-09-25 14:43:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 14:43:12,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:12,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:12,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,981 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 14:43:12,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293729963] [2020-09-25 14:43:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 14:43:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4555 [2020-09-25 14:43:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 14:43:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:43:17,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:43:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:17,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293729963] [2020-09-25 14:43:17,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:17,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:17,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287894061] [2020-09-25 14:43:17,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:17,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:17,927 INFO L87 Difference]: Start difference. First operand 1050 states and 1254 transitions. Second operand 8 states. [2020-09-25 14:43:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:21,565 INFO L93 Difference]: Finished difference Result 2709 states and 3383 transitions. [2020-09-25 14:43:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:21,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 14:43:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:21,578 INFO L225 Difference]: With dead ends: 2709 [2020-09-25 14:43:21,578 INFO L226 Difference]: Without dead ends: 1824 [2020-09-25 14:43:21,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:43:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2020-09-25 14:43:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1726. [2020-09-25 14:43:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2020-09-25 14:43:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2120 transitions. [2020-09-25 14:43:21,655 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2120 transitions. Word has length 146 [2020-09-25 14:43:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:21,657 INFO L479 AbstractCegarLoop]: Abstraction has 1726 states and 2120 transitions. [2020-09-25 14:43:21,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2120 transitions. [2020-09-25 14:43:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:43:21,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:21,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:21,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:21,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:21,662 INFO L82 PathProgramCache]: Analyzing trace with hash -764978616, now seen corresponding path program 1 times [2020-09-25 14:43:21,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:21,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295114133] [2020-09-25 14:43:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:43:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:43:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:43:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 14:43:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:43:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:23,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295114133] [2020-09-25 14:43:23,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:23,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:23,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050150771] [2020-09-25 14:43:23,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:23,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:23,618 INFO L87 Difference]: Start difference. First operand 1726 states and 2120 transitions. Second operand 7 states. [2020-09-25 14:43:25,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:25,787 INFO L93 Difference]: Finished difference Result 4261 states and 5528 transitions. [2020-09-25 14:43:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:25,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 14:43:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:25,806 INFO L225 Difference]: With dead ends: 4261 [2020-09-25 14:43:25,806 INFO L226 Difference]: Without dead ends: 2700 [2020-09-25 14:43:25,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-09-25 14:43:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2684. [2020-09-25 14:43:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2020-09-25 14:43:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3397 transitions. [2020-09-25 14:43:25,895 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3397 transitions. Word has length 162 [2020-09-25 14:43:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:25,895 INFO L479 AbstractCegarLoop]: Abstraction has 2684 states and 3397 transitions. [2020-09-25 14:43:25,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3397 transitions. [2020-09-25 14:43:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 14:43:25,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:25,901 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 14:43:25,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:25,902 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:25,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1687252463, now seen corresponding path program 1 times [2020-09-25 14:43:25,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:25,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654452602] [2020-09-25 14:43:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:30,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:30,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 14:43:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:43:30,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:43:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:43:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:31,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:31,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:31,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:31,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:31,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:31,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:31,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 14:43:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:31,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:31,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:31,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654452602] [2020-09-25 14:43:31,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:31,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:31,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285602257] [2020-09-25 14:43:31,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:31,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:31,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:31,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:31,430 INFO L87 Difference]: Start difference. First operand 2684 states and 3397 transitions. Second operand 7 states. [2020-09-25 14:43:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:34,606 INFO L93 Difference]: Finished difference Result 7225 states and 9488 transitions. [2020-09-25 14:43:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:34,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-09-25 14:43:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:34,638 INFO L225 Difference]: With dead ends: 7225 [2020-09-25 14:43:34,638 INFO L226 Difference]: Without dead ends: 4706 [2020-09-25 14:43:34,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2020-09-25 14:43:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4402. [2020-09-25 14:43:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4402 states. [2020-09-25 14:43:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5496 transitions. [2020-09-25 14:43:34,796 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5496 transitions. Word has length 225 [2020-09-25 14:43:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:34,797 INFO L479 AbstractCegarLoop]: Abstraction has 4402 states and 5496 transitions. [2020-09-25 14:43:34,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5496 transitions. [2020-09-25 14:43:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 14:43:34,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:34,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 14:43:34,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:43:34,804 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -978009387, now seen corresponding path program 1 times [2020-09-25 14:43:34,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:34,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22491488] [2020-09-25 14:43:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:34,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking...