/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/Problem02_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:51,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:51,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:51,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:51,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:51,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:51,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:51,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:51,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:51,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:51,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:51,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:51,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:51,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:51,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:51,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:51,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:51,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:51,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:51,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:51,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:51,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:51,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:51,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:51,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:51,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:51,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:51,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:51,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:51,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:51,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:51,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:51,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:51,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:51,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:51,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:51,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:51,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:51,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:51,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:51,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:51,358 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 14:40:51,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:51,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:51,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:51,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:51,404 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:51,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:51,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:51,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:51,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:51,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:51,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:51,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:51,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:51,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:51,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:51,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:51,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:51,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:51,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:51,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:51,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:51,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:51,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:51,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:51,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:51,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:51,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:51,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:51,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:51,411 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 14:40:51,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:51,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:51,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:51,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:51,922 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:51,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 14:40:52,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14203274/6c24978131244b65b906b35430ad9989/FLAG1a114a0d9 [2020-09-25 14:40:52,669 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:52,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 14:40:52,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14203274/6c24978131244b65b906b35430ad9989/FLAG1a114a0d9 [2020-09-25 14:40:52,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d14203274/6c24978131244b65b906b35430ad9989 [2020-09-25 14:40:52,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:52,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:52,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:52,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:52,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:52,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:52" (1/1) ... [2020-09-25 14:40:52,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:52, skipping insertion in model container [2020-09-25 14:40:52,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:52" (1/1) ... [2020-09-25 14:40:52,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:53,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:53,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:53,475 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:53,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:53,756 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:53,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53 WrapperNode [2020-09-25 14:40:53,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:53,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:53,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:53,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:53,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (1/1) ... [2020-09-25 14:40:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:53,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:53,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:53,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:53,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (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 14:40:54,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:55,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:55,316 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:55,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:55 BoogieIcfgContainer [2020-09-25 14:40:55,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:55,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:55,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:55,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:55,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:52" (1/3) ... [2020-09-25 14:40:55,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:55, skipping insertion in model container [2020-09-25 14:40:55,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:53" (2/3) ... [2020-09-25 14:40:55,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:55, skipping insertion in model container [2020-09-25 14:40:55,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:55" (3/3) ... [2020-09-25 14:40:55,336 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 14:40:55,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:55,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:55,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:55,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:55,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:55,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:55,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:55,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:55,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:55,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:55,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:40:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:55,475 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] [2020-09-25 14:40:55,476 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:55,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 14:40:55,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:55,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 14:40:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:41:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:41:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 14:41:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:41:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:41:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:01,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 14:41:01,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:41:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,222 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 14:41:01,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 14:41:01,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:01,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:01,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704109878] [2020-09-25 14:41:01,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:01,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:01,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:01,267 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:41:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:03,739 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:41:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:03,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 14:41:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:03,770 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:41:03,770 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:41:03,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:41:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:41:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:41:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:41:03,896 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 131 [2020-09-25 14:41:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:03,897 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:41:03,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:41:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 14:41:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:03,909 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:41:03,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:03,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 14:41:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:03,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296190900] [2020-09-25 14:41:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 14:41:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:41:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:41:08,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:41:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 14:41:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:09,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:41:09,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:09,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:41:09,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:41:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:09,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296190900] [2020-09-25 14:41:09,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:09,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:09,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851201804] [2020-09-25 14:41:09,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:09,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:09,238 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:41:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:11,067 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 14:41:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:11,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 14:41:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:11,084 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 14:41:11,085 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 14:41:11,088 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 14:41:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 14:41:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 14:41:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 14:41:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 14:41:11,132 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 149 [2020-09-25 14:41:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:11,133 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 14:41:11,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 14:41:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:41:11,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:11,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:11,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:11,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1134154151, now seen corresponding path program 1 times [2020-09-25 14:41:11,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:11,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174789192] [2020-09-25 14:41:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:16,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:41:16,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:41:16,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:16,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:41:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 14:41:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:16,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:16,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:41:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:16,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:16,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:41:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:16,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174789192] [2020-09-25 14:41:16,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:16,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:16,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716790990] [2020-09-25 14:41:16,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:16,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:16,416 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 14:41:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:18,492 INFO L93 Difference]: Finished difference Result 2887 states and 3693 transitions. [2020-09-25 14:41:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:18,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 14:41:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:18,512 INFO L225 Difference]: With dead ends: 2887 [2020-09-25 14:41:18,515 INFO L226 Difference]: Without dead ends: 1873 [2020-09-25 14:41:18,518 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 14:41:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-09-25 14:41:18,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1717. [2020-09-25 14:41:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1717 states. [2020-09-25 14:41:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2178 transitions. [2020-09-25 14:41:18,585 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2178 transitions. Word has length 165 [2020-09-25 14:41:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:18,585 INFO L479 AbstractCegarLoop]: Abstraction has 1717 states and 2178 transitions. [2020-09-25 14:41:18,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2178 transitions. [2020-09-25 14:41:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 14:41:18,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:18,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:18,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:18,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 14:41:18,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:18,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734735205] [2020-09-25 14:41:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 14:41:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:41:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:23,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:23,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 14:41:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:41:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:41:24,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734735205] [2020-09-25 14:41:24,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:24,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205438244] [2020-09-25 14:41:24,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:24,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:24,437 INFO L87 Difference]: Start difference. First operand 1717 states and 2178 transitions. Second operand 9 states. [2020-09-25 14:41:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:27,997 INFO L93 Difference]: Finished difference Result 5560 states and 7499 transitions. [2020-09-25 14:41:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:27,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2020-09-25 14:41:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:28,025 INFO L225 Difference]: With dead ends: 5560 [2020-09-25 14:41:28,025 INFO L226 Difference]: Without dead ends: 3679 [2020-09-25 14:41:28,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:28,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2020-09-25 14:41:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3611. [2020-09-25 14:41:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3611 states. [2020-09-25 14:41:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 4477 transitions. [2020-09-25 14:41:28,183 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 4477 transitions. Word has length 187 [2020-09-25 14:41:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:28,183 INFO L479 AbstractCegarLoop]: Abstraction has 3611 states and 4477 transitions. [2020-09-25 14:41:28,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:41:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 4477 transitions. [2020-09-25 14:41:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:41:28,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:28,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:28,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:28,201 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:28,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1049880763, now seen corresponding path program 1 times [2020-09-25 14:41:28,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:28,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974736183] [2020-09-25 14:41:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 14:41:33,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:41:33,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 14:41:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 14:41:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:33,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:41:33,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:41:33,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:41:33,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:33,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 14:41:33,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:41:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:41:33,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974736183] [2020-09-25 14:41:33,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:33,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:33,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138764359] [2020-09-25 14:41:33,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:33,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:33,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:33,634 INFO L87 Difference]: Start difference. First operand 3611 states and 4477 transitions. Second operand 5 states. [2020-09-25 14:41:35,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:35,680 INFO L93 Difference]: Finished difference Result 9403 states and 12043 transitions. [2020-09-25 14:41:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:35,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 14:41:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:35,710 INFO L225 Difference]: With dead ends: 9403 [2020-09-25 14:41:35,711 INFO L226 Difference]: Without dead ends: 5814 [2020-09-25 14:41:35,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5814 states. [2020-09-25 14:41:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5814 to 5735. [2020-09-25 14:41:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5735 states. [2020-09-25 14:41:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5735 states to 5735 states and 6991 transitions. [2020-09-25 14:41:35,874 INFO L78 Accepts]: Start accepts. Automaton has 5735 states and 6991 transitions. Word has length 193 [2020-09-25 14:41:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:35,874 INFO L479 AbstractCegarLoop]: Abstraction has 5735 states and 6991 transitions. [2020-09-25 14:41:35,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5735 states and 6991 transitions. [2020-09-25 14:41:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 14:41:35,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:35,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:35,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:35,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash 952535934, now seen corresponding path program 1 times [2020-09-25 14:41:35,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:35,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850219499] [2020-09-25 14:41:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 14:41:40,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:41:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:41,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:41:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:41:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:41:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:41:41,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:41:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:41:41,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850219499] [2020-09-25 14:41:41,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:41,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:41,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689311224] [2020-09-25 14:41:41,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:41,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:41,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:41,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:41,204 INFO L87 Difference]: Start difference. First operand 5735 states and 6991 transitions. Second operand 7 states.