/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:58:42,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:58:42,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:58:42,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:58:42,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:58:42,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:58:42,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:58:42,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:58:42,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:58:42,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:58:42,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:58:42,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:58:42,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:58:42,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:58:42,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:58:42,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:58:42,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:58:42,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:58:42,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:58:42,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:58:42,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:58:42,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:58:42,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:58:42,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:58:42,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:58:42,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:58:42,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:58:42,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:58:42,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:58:42,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:58:42,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:58:42,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:58:42,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:58:42,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:58:42,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:58:42,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:58:42,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:58:42,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:58:42,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:58:42,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:58:42,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:58:42,493 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 [2020-10-14 04:58:42,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:58:42,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:58:42,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:58:42,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:58:42,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:58:42,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:58:42,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:58:42,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:58:42,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:58:42,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:58:42,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:58:42,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:58:42,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:58:42,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:58:42,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:58:42,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:58:42,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:58:42,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:58:42,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:58:42,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:58:42,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:58:42,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:58:42,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:58:42,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:58:42,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:58:42,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:58:42,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:58:42,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:58:42,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:58:42,547 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:58:42,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:58:42,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:58:42,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:58:42,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:58:42,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:58:42,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-10-14 04:58:42,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff5e2c67a/256ea166e0dc43a294146ff86ec94e0b/FLAGb4e8cc32c [2020-10-14 04:58:43,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:58:43,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-10-14 04:58:43,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff5e2c67a/256ea166e0dc43a294146ff86ec94e0b/FLAGb4e8cc32c [2020-10-14 04:58:43,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff5e2c67a/256ea166e0dc43a294146ff86ec94e0b [2020-10-14 04:58:43,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:58:43,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:58:43,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:58:43,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:58:43,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:58:43,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:58:43" (1/1) ... [2020-10-14 04:58:43,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:43, skipping insertion in model container [2020-10-14 04:58:43,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:58:43" (1/1) ... [2020-10-14 04:58:43,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:58:43,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:58:44,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:58:44,094 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:58:44,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:58:44,217 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:58:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44 WrapperNode [2020-10-14 04:58:44,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:58:44,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:58:44,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:58:44,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:58:44,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (1/1) ... [2020-10-14 04:58:44,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:58:44,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:58:44,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:58:44,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:58:44,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (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 [2020-10-14 04:58:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-14 04:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:58:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:58:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:58:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 04:58:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:58:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:58:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:58:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:58:44,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:58:44,622 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 04:58:44,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:58:44 BoogieIcfgContainer [2020-10-14 04:58:44,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:58:44,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:58:44,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:58:44,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:58:44,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:58:43" (1/3) ... [2020-10-14 04:58:44,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4795ae32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:58:44, skipping insertion in model container [2020-10-14 04:58:44,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:44" (2/3) ... [2020-10-14 04:58:44,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4795ae32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:58:44, skipping insertion in model container [2020-10-14 04:58:44,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:58:44" (3/3) ... [2020-10-14 04:58:44,639 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-10-14 04:58:44,653 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:58:44,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:58:44,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:58:44,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:58:44,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:58:44,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:58:44,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:58:44,717 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:58:44,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:58:44,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:58:44,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:58:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-14 04:58:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:58:44,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:44,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:44,747 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash -899836778, now seen corresponding path program 1 times [2020-10-14 04:58:44,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:44,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227903651] [2020-10-14 04:58:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 04:58:45,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 04:58:45,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:58:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:58:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:58:45,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 04:58:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:45,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:58:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:45,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227903651] [2020-10-14 04:58:45,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:45,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:58:45,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389726720] [2020-10-14 04:58:45,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:58:45,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:45,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:58:45,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:58:45,326 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-14 04:58:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:45,429 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-10-14 04:58:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:58:45,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 04:58:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:45,442 INFO L225 Difference]: With dead ends: 42 [2020-10-14 04:58:45,442 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 04:58:45,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:58:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 04:58:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-14 04:58:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 04:58:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 04:58:45,483 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-10-14 04:58:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:45,484 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 04:58:45,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:58:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 04:58:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:58:45,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:45,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:45,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:58:45,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:45,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1137678901, now seen corresponding path program 1 times [2020-10-14 04:58:45,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:45,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052118345] [2020-10-14 04:58:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:58:45,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 04:58:45,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:58:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:58:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:45,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:58:45,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 04:58:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:45,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:45,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:58:45,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:45,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:45,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052118345] [2020-10-14 04:58:45,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:45,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:58:45,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317732736] [2020-10-14 04:58:45,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:58:45,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:58:45,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:58:45,943 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2020-10-14 04:58:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:46,000 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-14 04:58:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:58:46,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:58:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:46,002 INFO L225 Difference]: With dead ends: 34 [2020-10-14 04:58:46,002 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 04:58:46,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:58:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 04:58:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 04:58:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 04:58:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-14 04:58:46,010 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2020-10-14 04:58:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:46,010 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-14 04:58:46,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:58:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-14 04:58:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:58:46,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:46,011 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] [2020-10-14 04:58:46,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:58:46,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:46,012 INFO L82 PathProgramCache]: Analyzing trace with hash 278779309, now seen corresponding path program 1 times [2020-10-14 04:58:46,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:46,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235908702] [2020-10-14 04:58:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:46,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:58:46,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 04:58:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:58:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:58:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:46,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:46,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 04:58:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:46,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:46,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:46,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:46,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:46,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235908702] [2020-10-14 04:58:46,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:46,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:58:46,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738379096] [2020-10-14 04:58:46,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:58:46,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:46,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:58:46,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:58:46,484 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-14 04:58:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:46,556 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-14 04:58:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:58:46,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 04:58:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:46,558 INFO L225 Difference]: With dead ends: 36 [2020-10-14 04:58:46,558 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 04:58:46,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:58:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 04:58:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 04:58:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 04:58:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-14 04:58:46,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2020-10-14 04:58:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:46,566 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-14 04:58:46,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:58:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-14 04:58:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:58:46,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:46,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:46,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:58:46,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash -9513713, now seen corresponding path program 2 times [2020-10-14 04:58:46,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:46,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173133950] [2020-10-14 04:58:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 04:58:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 04:58:46,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:46,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:58:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:58:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:47,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:58:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:47,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:47,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:58:47,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:47,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:47,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173133950] [2020-10-14 04:58:47,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:47,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:58:47,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38010422] [2020-10-14 04:58:47,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:58:47,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:47,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:58:47,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:58:47,070 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2020-10-14 04:58:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:47,182 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-14 04:58:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:58:47,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 04:58:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:47,184 INFO L225 Difference]: With dead ends: 38 [2020-10-14 04:58:47,184 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 04:58:47,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:58:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 04:58:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 04:58:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 04:58:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-14 04:58:47,194 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2020-10-14 04:58:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:47,195 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-14 04:58:47,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:58:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-14 04:58:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:58:47,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:47,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:47,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:58:47,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:47,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2113766385, now seen corresponding path program 3 times [2020-10-14 04:58:47,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:47,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275836589] [2020-10-14 04:58:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:58:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 04:58:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:47,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:58:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:58:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:47,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:47,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:47,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:58:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:47,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:47,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275836589] [2020-10-14 04:58:47,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:47,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:58:47,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278730667] [2020-10-14 04:58:47,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:58:47,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:47,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:58:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:47,848 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-10-14 04:58:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:47,916 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-14 04:58:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:58:47,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-14 04:58:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:47,917 INFO L225 Difference]: With dead ends: 40 [2020-10-14 04:58:47,918 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 04:58:47,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 04:58:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 04:58:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 04:58:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-14 04:58:47,924 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2020-10-14 04:58:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:47,925 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-14 04:58:47,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:58:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-14 04:58:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:58:47,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:47,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:47,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:58:47,926 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1818492333, now seen corresponding path program 4 times [2020-10-14 04:58:47,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:47,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320109590] [2020-10-14 04:58:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:58:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:58:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 04:58:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:58:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 04:58:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:58:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:48,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:48,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:48,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 04:58:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:48,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:58:48,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:48,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:48,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 04:58:48,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320109590] [2020-10-14 04:58:48,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:48,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:58:48,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642656589] [2020-10-14 04:58:48,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:58:48,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:58:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:58:48,783 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-10-14 04:58:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:48,876 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-14 04:58:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:58:48,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 04:58:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:48,878 INFO L225 Difference]: With dead ends: 37 [2020-10-14 04:58:48,878 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 04:58:48,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 04:58:48,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 04:58:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 04:58:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-14 04:58:48,884 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2020-10-14 04:58:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:48,884 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-14 04:58:48,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:58:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-14 04:58:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:58:48,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:48,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:48,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:58:48,886 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:48,887 INFO L82 PathProgramCache]: Analyzing trace with hash 619997966, now seen corresponding path program 1 times [2020-10-14 04:58:48,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:48,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990530184] [2020-10-14 04:58:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:58:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-14 04:58:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:50,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:58:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:58:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:50,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:50,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 04:58:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:58:50,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990530184] [2020-10-14 04:58:50,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:50,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:58:50,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889523512] [2020-10-14 04:58:50,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:58:50,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:50,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:58:50,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:58:50,732 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2020-10-14 04:58:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:50,837 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-14 04:58:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:58:50,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-14 04:58:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:50,838 INFO L225 Difference]: With dead ends: 46 [2020-10-14 04:58:50,838 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 04:58:50,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:58:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 04:58:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 04:58:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 04:58:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-14 04:58:50,844 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2020-10-14 04:58:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:50,845 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-14 04:58:50,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:58:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-14 04:58:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:58:50,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:50,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:50,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:58:50,846 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash 814278768, now seen corresponding path program 2 times [2020-10-14 04:58:50,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:50,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128726441] [2020-10-14 04:58:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:53,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:58:53,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-14 04:58:53,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:53,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:58:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:58:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:53,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 04:58:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:58:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 04:58:53,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128726441] [2020-10-14 04:58:53,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:53,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:58:53,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473226110] [2020-10-14 04:58:53,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:58:53,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:53,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:58:53,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:58:53,329 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-10-14 04:58:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:53,431 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-14 04:58:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:58:53,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 04:58:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:53,433 INFO L225 Difference]: With dead ends: 48 [2020-10-14 04:58:53,433 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 04:58:53,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:58:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 04:58:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 04:58:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 04:58:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-14 04:58:53,445 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2020-10-14 04:58:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:53,447 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-14 04:58:53,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:58:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-14 04:58:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:58:53,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:53,449 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:53,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:58:53,449 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1460431534, now seen corresponding path program 3 times [2020-10-14 04:58:53,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:53,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997343663] [2020-10-14 04:58:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:53,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:58:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2242 [2020-10-14 04:58:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:55,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:58:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 04:58:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:58:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:55,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:58:55,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:55,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 04:58:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:55,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:55,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:55,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:55,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:58:55,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:55,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 04:58:55,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997343663] [2020-10-14 04:58:55,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:55,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:58:55,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722994151] [2020-10-14 04:58:55,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:58:55,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:58:55,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:58:55,823 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 7 states. [2020-10-14 04:58:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:55,955 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-14 04:58:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:58:55,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-14 04:58:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:55,957 INFO L225 Difference]: With dead ends: 43 [2020-10-14 04:58:55,957 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 04:58:55,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:58:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 04:58:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-14 04:58:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 04:58:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-14 04:58:55,963 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-10-14 04:58:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:55,964 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-14 04:58:55,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:58:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-14 04:58:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:58:55,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:55,965 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:55,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:58:55,966 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1119042125, now seen corresponding path program 4 times [2020-10-14 04:58:55,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:55,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893719766] [2020-10-14 04:58:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:58,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:58,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:58:58,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:58:58,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2819 [2020-10-14 04:58:58,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:58,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:58:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:58,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:58,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:58,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:58,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:58,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 04:58:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:58,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:58:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:58:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:58:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 04:58:58,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893719766] [2020-10-14 04:58:58,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:58:58,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:58:58,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091786182] [2020-10-14 04:58:58,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:58:58,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:58,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:58:58,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:58:58,907 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-10-14 04:58:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:59,018 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-14 04:58:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:58:59,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-14 04:58:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:59,020 INFO L225 Difference]: With dead ends: 54 [2020-10-14 04:58:59,020 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 04:58:59,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:58:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 04:58:59,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 04:58:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 04:58:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-14 04:58:59,026 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2020-10-14 04:58:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:59,026 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-14 04:58:59,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:58:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-14 04:58:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:58:59,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:59,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:59,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:58:59,028 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:59,028 INFO L82 PathProgramCache]: Analyzing trace with hash -94853585, now seen corresponding path program 5 times [2020-10-14 04:58:59,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:59,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264814522] [2020-10-14 04:58:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:03,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:59:03,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:59:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4731 [2020-10-14 04:59:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:59:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:59:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:59:03,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:03,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:59:03,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:03,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 04:59:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:03,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:59:03,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:03,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:59:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 04:59:03,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264814522] [2020-10-14 04:59:03,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:03,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:59:03,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408747088] [2020-10-14 04:59:03,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:59:03,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:59:03,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:59:03,894 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 8 states. [2020-10-14 04:59:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:04,035 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-10-14 04:59:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:59:04,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-14 04:59:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:04,037 INFO L225 Difference]: With dead ends: 47 [2020-10-14 04:59:04,037 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 04:59:04,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:59:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 04:59:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 04:59:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 04:59:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-14 04:59:04,050 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2020-10-14 04:59:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:04,050 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-14 04:59:04,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:59:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-14 04:59:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:59:04,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:59:04,054 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:59:04,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:59:04,055 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:59:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:59:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash -820541462, now seen corresponding path program 6 times [2020-10-14 04:59:04,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:59:04,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604581059] [2020-10-14 04:59:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:59:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:09,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:59:09,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:59:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:59:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:09,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:59:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:59:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:59:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:59:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:09,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:09,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:09,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:59:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:09,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:59:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:59:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:59:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 04:59:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:59:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:59:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:59:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:59:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:59:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 04:59:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:59:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-14 04:59:09,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604581059] [2020-10-14 04:59:09,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:59:09,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:59:09,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109422474] [2020-10-14 04:59:09,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:59:09,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:59:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:59:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:59:09,275 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2020-10-14 04:59:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:59:09,576 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-14 04:59:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:59:09,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 04:59:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:59:09,577 INFO L225 Difference]: With dead ends: 39 [2020-10-14 04:59:09,578 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 04:59:09,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:59:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 04:59:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 04:59:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 04:59:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 04:59:09,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-14 04:59:09,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:59:09,580 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 04:59:09,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:59:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 04:59:09,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 04:59:09,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:59:09,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 04:59:09,671 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:59:09,671 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 04:59:09,671 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:59:09,672 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:59:09,672 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 04:59:09,672 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 04:59:09,672 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:59:09,672 INFO L264 CegarLoopResult]: At program point L37-4(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (and (= main_~i~0 (select (select |#memory_int| .cse0) .cse1)) (<= main_~pa~0.offset .cse1) (= .cse0 main_~pa~0.base) (<= .cse1 main_~pa~0.offset))) [2020-10-14 04:59:09,672 INFO L268 CegarLoopResult]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point L27-4(lines 21 50) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-10-14 04:59:09,673 INFO L268 CegarLoopResult]: For program point L32(lines 32 44) no Hoare annotation was computed. [2020-10-14 04:59:09,674 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-10-14 04:59:09,674 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 04:59:09,674 INFO L264 CegarLoopResult]: At program point L41(lines 21 50) the Hoare annotation is: false [2020-10-14 04:59:09,674 INFO L268 CegarLoopResult]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2020-10-14 04:59:09,674 INFO L268 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-10-14 04:59:09,675 INFO L264 CegarLoopResult]: At program point L37-3(lines 37 39) the Hoare annotation is: (let ((.cse0 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (and (<= main_~pa~0.offset .cse0) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (let ((.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (<= (+ main_~i~0 1) .cse1) (= main_~i~0 .cse1))) (<= .cse0 main_~pa~0.offset))) [2020-10-14 04:59:09,675 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2020-10-14 04:59:09,675 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2020-10-14 04:59:09,675 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2020-10-14 04:59:09,690 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,691 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 04:59:09,692 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,698 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,699 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 04:59:09,699 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,699 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:59:09 BoogieIcfgContainer [2020-10-14 04:59:09,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:59:09,706 INFO L168 Benchmark]: Toolchain (without parser) took 25842.19 ms. Allocated memory was 145.2 MB in the beginning and 629.7 MB in the end (delta: 484.4 MB). Free memory was 101.3 MB in the beginning and 287.6 MB in the end (delta: -186.3 MB). Peak memory consumption was 298.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,707 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.41 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 179.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,709 INFO L168 Benchmark]: Boogie Preprocessor took 39.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,709 INFO L168 Benchmark]: RCFGBuilder took 367.96 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 159.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,710 INFO L168 Benchmark]: TraceAbstraction took 25073.53 ms. Allocated memory was 201.3 MB in the beginning and 629.7 MB in the end (delta: 428.3 MB). Free memory was 158.6 MB in the beginning and 287.6 MB in the end (delta: -129.0 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:59:09,714 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.41 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 179.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.96 ms. Allocated memory is still 201.3 MB. Free memory was 177.1 MB in the beginning and 159.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25073.53 ms. Allocated memory was 201.3 MB in the beginning and 629.7 MB in the end (delta: 428.3 MB). Free memory was 158.6 MB in the beginning and 287.6 MB in the end (delta: -129.0 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant [2020-10-14 04:59:09,736 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,736 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 04:59:09,737 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,738 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,740 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,740 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-14 04:59:09,741 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-14 04:59:09,741 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,741 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-14 04:59:09,741 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,741 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 04:59:09,742 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((pa <= #memory_$Pointer$[cont][cont] + 4 && #memory_$Pointer$[cont][cont] == pa) && (i + 1 <= unknown-#memory_int-unknown[pa][pa] || i == unknown-#memory_int-unknown[pa][pa])) && #memory_$Pointer$[cont][cont] + 4 <= pa - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.8s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 63 SDslu, 548 SDs, 0 SdLazy, 544 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 104 HoareAnnotationTreeSize, 20 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 61 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 325 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 29497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 166/271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...