/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:42:29,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:42:29,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:42:29,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:42:29,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:42:29,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:42:29,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:42:29,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:42:29,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:42:29,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:42:29,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:42:29,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:42:29,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:42:29,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:42:29,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:42:29,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:42:29,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:42:29,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:42:29,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:42:29,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:42:29,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:42:29,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:42:29,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:42:29,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:42:29,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:42:29,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:42:29,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:42:29,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:42:29,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:42:29,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:42:29,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:42:29,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:42:29,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:42:29,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:42:29,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:42:29,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:42:29,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:42:29,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:42:29,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:42:29,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:42:29,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:42:29,270 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 [2020-10-29 09:42:29,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:42:29,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:42:29,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:42:29,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:42:29,335 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:42:29,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:42:29,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:42:29,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:42:29,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:42:29,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:42:29,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:42:29,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:42:29,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:42:29,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:42:29,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:42:29,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:42:29,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:42:29,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:42:29,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:42:29,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:42:29,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:42:29,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:42:29,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:42:29,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:42:29,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:42:29,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:42:29,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:42:29,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:42:29,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:42:29,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:42:29,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:42:29,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:42:29,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:42:29,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:42:29,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:42:29,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-10-29 09:42:29,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d88cb044/a310c949eda34d0891064838add72b5c/FLAG456b6db5d [2020-10-29 09:42:30,598 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:42:30,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-10-29 09:42:30,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d88cb044/a310c949eda34d0891064838add72b5c/FLAG456b6db5d [2020-10-29 09:42:30,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d88cb044/a310c949eda34d0891064838add72b5c [2020-10-29 09:42:30,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:42:31,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:42:31,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:42:31,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:42:31,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:42:31,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:42:30" (1/1) ... [2020-10-29 09:42:31,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5439e076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31, skipping insertion in model container [2020-10-29 09:42:31,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:42:30" (1/1) ... [2020-10-29 09:42:31,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:42:31,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:42:31,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:42:31,243 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:42:31,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:42:31,282 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:42:31,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31 WrapperNode [2020-10-29 09:42:31,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:42:31,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:42:31,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:42:31,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:42:31,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (1/1) ... [2020-10-29 09:42:31,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:42:31,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:42:31,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:42:31,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:42:31,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (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 [2020-10-29 09:42:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:42:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:42:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:42:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:42:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:42:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:42:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:42:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:42:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:42:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:42:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:42:31,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:42:31,920 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:42:31,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:42:31 BoogieIcfgContainer [2020-10-29 09:42:31,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:42:31,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:42:31,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:42:31,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:42:31,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:42:30" (1/3) ... [2020-10-29 09:42:31,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4104afe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:42:31, skipping insertion in model container [2020-10-29 09:42:31,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:42:31" (2/3) ... [2020-10-29 09:42:31,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4104afe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:42:31, skipping insertion in model container [2020-10-29 09:42:31,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:42:31" (3/3) ... [2020-10-29 09:42:31,941 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-10-29 09:42:31,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:42:31,960 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:42:31,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:42:32,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:42:32,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:42:32,017 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:42:32,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:42:32,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:42:32,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:42:32,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:42:32,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:42:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-29 09:42:32,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:42:32,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:32,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:32,055 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:32,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:32,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1366579838, now seen corresponding path program 1 times [2020-10-29 09:42:32,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:32,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46784801] [2020-10-29 09:42:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:32,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:32,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:42:32,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 09:42:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:32,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:42:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:42:32,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:32,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:32,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:32,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:32,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:42:32,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:32,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:32,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:42:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:32,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46784801] [2020-10-29 09:42:32,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:32,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:42:32,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390651886] [2020-10-29 09:42:32,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:42:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:42:32,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:42:32,744 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2020-10-29 09:42:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:33,399 INFO L93 Difference]: Finished difference Result 95 states and 165 transitions. [2020-10-29 09:42:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:42:33,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-29 09:42:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:33,414 INFO L225 Difference]: With dead ends: 95 [2020-10-29 09:42:33,414 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:42:33,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:42:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:42:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-29 09:42:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:42:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2020-10-29 09:42:33,480 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 16 [2020-10-29 09:42:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:33,481 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2020-10-29 09:42:33,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:42:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2020-10-29 09:42:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:42:33,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:33,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:33,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:42:33,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 991427645, now seen corresponding path program 1 times [2020-10-29 09:42:33,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:33,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105126728] [2020-10-29 09:42:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:33,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:42:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 09:42:33,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:33,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:42:33,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:42:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:42:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:33,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:33,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:42:33,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:33,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:42:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:33,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105126728] [2020-10-29 09:42:33,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:33,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:42:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370307723] [2020-10-29 09:42:33,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:42:33,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:42:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:42:33,760 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand 6 states. [2020-10-29 09:42:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:34,181 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2020-10-29 09:42:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:42:34,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-29 09:42:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:34,185 INFO L225 Difference]: With dead ends: 59 [2020-10-29 09:42:34,185 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:42:34,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:42:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:42:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-29 09:42:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 09:42:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2020-10-29 09:42:34,202 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 16 [2020-10-29 09:42:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:34,203 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2020-10-29 09:42:34,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:42:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2020-10-29 09:42:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:42:34,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:34,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:34,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:42:34,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1753581165, now seen corresponding path program 1 times [2020-10-29 09:42:34,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:34,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442875655] [2020-10-29 09:42:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:42:34,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 09:42:34,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:42:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:42:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:34,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:42:34,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442875655] [2020-10-29 09:42:34,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:34,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:42:34,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344009815] [2020-10-29 09:42:34,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:42:34,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:34,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:42:34,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:42:34,430 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand 6 states. [2020-10-29 09:42:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:34,786 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2020-10-29 09:42:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:42:34,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-29 09:42:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:34,788 INFO L225 Difference]: With dead ends: 61 [2020-10-29 09:42:34,789 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:42:34,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:42:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:42:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-29 09:42:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:42:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-10-29 09:42:34,804 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 21 [2020-10-29 09:42:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:34,805 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-10-29 09:42:34,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:42:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-10-29 09:42:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:42:34,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:34,806 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:34,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:42:34,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1424654691, now seen corresponding path program 1 times [2020-10-29 09:42:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:34,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316279018] [2020-10-29 09:42:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:42:34,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 09:42:34,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:34,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:42:34,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:42:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:42:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:34,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:42:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:35,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:42:35,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316279018] [2020-10-29 09:42:35,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:42:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126968554] [2020-10-29 09:42:35,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:42:35,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:42:35,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:42:35,009 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 7 states. [2020-10-29 09:42:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:35,402 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-10-29 09:42:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:42:35,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-29 09:42:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:35,404 INFO L225 Difference]: With dead ends: 65 [2020-10-29 09:42:35,404 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:42:35,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:42:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:42:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-29 09:42:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 09:42:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-10-29 09:42:35,420 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 26 [2020-10-29 09:42:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:35,421 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-10-29 09:42:35,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:42:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-10-29 09:42:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:42:35,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:35,422 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:35,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:42:35,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:35,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2015933906, now seen corresponding path program 1 times [2020-10-29 09:42:35,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:35,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529400690] [2020-10-29 09:42:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:42:35,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 09:42:35,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:42:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:42:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:42:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:35,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:42:35,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:35,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:35,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:35,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:42:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:42:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:35,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:42:35,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:35,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:42:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:35,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 09:42:35,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529400690] [2020-10-29 09:42:35,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:35,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:42:35,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667157208] [2020-10-29 09:42:35,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:42:35,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:42:35,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:42:35,682 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 6 states. [2020-10-29 09:42:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:36,087 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2020-10-29 09:42:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:42:36,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 09:42:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:36,089 INFO L225 Difference]: With dead ends: 70 [2020-10-29 09:42:36,089 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:42:36,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:42:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:42:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 09:42:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 09:42:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-10-29 09:42:36,109 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 31 [2020-10-29 09:42:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:36,110 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-10-29 09:42:36,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:42:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-10-29 09:42:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:42:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:36,112 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:36,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:42:36,113 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:36,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1351997886, now seen corresponding path program 1 times [2020-10-29 09:42:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:36,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948654258] [2020-10-29 09:42:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 09:42:36,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 09:42:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:42:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:42:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:42:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 09:42:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 09:42:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 09:42:36,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948654258] [2020-10-29 09:42:36,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:36,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:42:36,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253193669] [2020-10-29 09:42:36,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:42:36,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:36,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:42:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:42:36,623 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 7 states. [2020-10-29 09:42:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:37,092 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2020-10-29 09:42:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:42:37,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-29 09:42:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:37,095 INFO L225 Difference]: With dead ends: 79 [2020-10-29 09:42:37,095 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 09:42:37,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:42:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 09:42:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-10-29 09:42:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 09:42:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2020-10-29 09:42:37,126 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 49 [2020-10-29 09:42:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:37,128 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2020-10-29 09:42:37,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:42:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2020-10-29 09:42:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 09:42:37,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:37,133 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:37,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:42:37,133 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1469062878, now seen corresponding path program 1 times [2020-10-29 09:42:37,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:37,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157831643] [2020-10-29 09:42:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:42:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 09:42:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:42:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:42:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:42:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:42:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:42:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:42:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 09:42:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 09:42:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:42:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 09:42:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:37,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 09:42:37,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157831643] [2020-10-29 09:42:37,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:37,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:42:37,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142583585] [2020-10-29 09:42:37,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:42:37,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:37,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:42:37,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:42:37,507 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 8 states. [2020-10-29 09:42:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:38,017 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-10-29 09:42:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:42:38,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-29 09:42:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:38,019 INFO L225 Difference]: With dead ends: 79 [2020-10-29 09:42:38,019 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 09:42:38,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:42:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 09:42:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-29 09:42:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 09:42:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-29 09:42:38,039 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 59 [2020-10-29 09:42:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:38,039 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-29 09:42:38,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:42:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-29 09:42:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:42:38,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:42:38,044 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:42:38,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:42:38,045 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:42:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:42:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash -463998120, now seen corresponding path program 1 times [2020-10-29 09:42:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:42:38,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055487101] [2020-10-29 09:42:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:42:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 09:42:38,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 09:42:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:42:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:42:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 09:42:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:42:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:42:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:42:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 09:42:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:42:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:42:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:42:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:42:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 09:42:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:42:38,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 09:42:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 09:42:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 09:42:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 09:42:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 09:42:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:42:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:42:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:42:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:42:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:42:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:42:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:42:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 09:42:38,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055487101] [2020-10-29 09:42:38,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:42:38,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:42:38,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446668617] [2020-10-29 09:42:38,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:42:38,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:42:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:42:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:42:38,512 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 9 states. [2020-10-29 09:42:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:42:38,994 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-29 09:42:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:42:38,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-29 09:42:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:42:38,996 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:42:38,996 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:42:38,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:42:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:42:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:42:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:42:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:42:38,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2020-10-29 09:42:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:42:38,999 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:42:38,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:42:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:42:38,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:42:38,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:42:39,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:42:40,016 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 09:42:40,017 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 09:42:40,017 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 09:42:40,017 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 09:42:40,017 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 09:42:40,017 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:42:40,017 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 09:42:40,018 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:42:40,018 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:42:40,018 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:42:40,020 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:42:40,020 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L270 CegarLoopResult]: At program point L35-2(lines 35 64) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-10-29 09:42:40,021 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 67) no Hoare annotation was computed. [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L56(lines 36 63) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (and (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,022 INFO L270 CegarLoopResult]: At program point L40-1(line 40) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,023 INFO L274 CegarLoopResult]: For program point L36(lines 36 63) no Hoare annotation was computed. [2020-10-29 09:42:40,023 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,024 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-10-29 09:42:40,024 INFO L274 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-10-29 09:42:40,025 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,025 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,025 INFO L270 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,025 INFO L270 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,026 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,026 INFO L270 CegarLoopResult]: At program point L46-1(line 46) the Hoare annotation is: (and (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,026 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 67) no Hoare annotation was computed. [2020-10-29 09:42:40,026 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (<= 0 main_~i~0) (< (+ main_~i~0 1) main_~len~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,026 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-10-29 09:42:40,026 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 65) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,026 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 65) no Hoare annotation was computed. [2020-10-29 09:42:40,027 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 67) the Hoare annotation is: true [2020-10-29 09:42:40,027 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (<= (+ main_~j~0 5) main_~bufsize~0) (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,027 INFO L270 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (and (<= 0 main_~j~0) (< main_~i~0 main_~len~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0) (<= (+ main_~j~0 4) main_~bufsize~0)) [2020-10-29 09:42:40,027 INFO L274 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-10-29 09:42:40,027 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-29 09:42:40,027 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:42:40,027 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-29 09:42:40,027 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:42:40,028 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:42:40,028 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 09:42:40,028 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 09:42:40,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:42:40 BoogieIcfgContainer [2020-10-29 09:42:40,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:42:40,065 INFO L168 Benchmark]: Toolchain (without parser) took 9060.30 ms. Allocated memory was 125.8 MB in the beginning and 231.7 MB in the end (delta: 105.9 MB). Free memory was 101.5 MB in the beginning and 93.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 116.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:40,066 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:42:40,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.23 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 90.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:40,069 INFO L168 Benchmark]: Boogie Preprocessor took 40.47 ms. Allocated memory is still 125.8 MB. Free memory was 90.9 MB in the beginning and 89.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:40,071 INFO L168 Benchmark]: RCFGBuilder took 600.98 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 89.4 MB in the beginning and 142.8 MB in the end (delta: -53.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:40,076 INFO L168 Benchmark]: TraceAbstraction took 8125.76 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 142.3 MB in the beginning and 93.5 MB in the end (delta: 48.7 MB). Peak memory consumption was 121.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:42:40,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.23 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 90.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.47 ms. Allocated memory is still 125.8 MB. Free memory was 90.9 MB in the beginning and 89.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 600.98 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 89.4 MB in the beginning and 142.8 MB in the end (delta: -53.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8125.76 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 142.3 MB in the beginning and 93.5 MB in the end (delta: 48.7 MB). Peak memory consumption was 121.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 35]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((j + 5 <= bufsize && 0 <= j) && i < len) && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 300 SDtfs, 255 SDslu, 514 SDs, 0 SdLazy, 1187 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 96 PreInvPairs, 117 NumberOfFragments, 380 HoareAnnotationTreeSize, 96 FomulaSimplifications, 3341 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 25 FomulaSimplificationsInter, 635 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 32300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 428/428 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...