/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:02:20,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:02:20,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:02:20,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:02:20,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:02:20,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:02:20,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:02:20,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:02:20,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:02:20,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:02:20,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:02:20,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:02:20,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:02:20,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:02:20,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:02:20,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:02:20,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:02:20,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:02:20,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:02:20,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:02:20,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:02:20,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:02:20,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:02:20,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:02:20,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:02:20,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:02:20,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:02:20,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:02:20,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:02:20,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:02:20,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:02:20,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:02:20,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:02:20,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:02:20,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:02:20,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:02:20,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:02:20,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:02:20,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:02:20,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:02:20,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:02:20,346 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 [2020-10-28 15:02:20,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:02:20,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:02:20,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:02:20,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:02:20,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:02:20,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:02:20,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:02:20,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:02:20,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:02:20,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:02:20,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:02:20,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:02:20,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:02:20,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:02:20,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:02:20,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:02:20,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:02:20,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:02:20,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:02:20,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:02:20,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:02:20,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:02:20,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:02:20,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:02:20,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:02:20,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:02:20,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:02:20,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:02:20,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:02:20,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:02:20,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:02:20,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:02:20,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:02:20,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:02:20,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:02:20,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-10-28 15:02:20,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f703b703e/df332724f29d4add8806b1ce4e875094/FLAGc57427056 [2020-10-28 15:02:21,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:02:21,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-10-28 15:02:21,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f703b703e/df332724f29d4add8806b1ce4e875094/FLAGc57427056 [2020-10-28 15:02:22,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f703b703e/df332724f29d4add8806b1ce4e875094 [2020-10-28 15:02:22,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:02:22,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:02:22,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:02:22,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:02:22,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:02:22,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768493df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22, skipping insertion in model container [2020-10-28 15:02:22,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:02:22,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:02:22,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:02:22,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:02:22,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:02:22,285 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:02:22,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22 WrapperNode [2020-10-28 15:02:22,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:02:22,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:02:22,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:02:22,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:02:22,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (1/1) ... [2020-10-28 15:02:22,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:02:22,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:02:22,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:02:22,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:02:22,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (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 [2020-10-28 15:02:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:02:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:02:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:02:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:02:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:02:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:02:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:02:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:02:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:02:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:02:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:02:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:02:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:02:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:02:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:02:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:02:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:02:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:02:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:02:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:02:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:02:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:02:22,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:02:22,762 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:02:22,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:02:22 BoogieIcfgContainer [2020-10-28 15:02:22,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:02:22,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:02:22,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:02:22,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:02:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:02:22" (1/3) ... [2020-10-28 15:02:22,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6444abd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:02:22, skipping insertion in model container [2020-10-28 15:02:22,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:22" (2/3) ... [2020-10-28 15:02:22,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6444abd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:02:22, skipping insertion in model container [2020-10-28 15:02:22,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:02:22" (3/3) ... [2020-10-28 15:02:22,777 INFO L111 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-10-28 15:02:22,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:02:22,827 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:02:22,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:02:22,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:02:22,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:02:22,927 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:02:22,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:02:22,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:02:22,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:02:22,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:02:22,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:02:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 15:02:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:02:22,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:22,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:22,970 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2013076175, now seen corresponding path program 1 times [2020-10-28 15:02:22,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:22,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269023437] [2020-10-28 15:02:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:23,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:23,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:02:23,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:02:23,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-28 15:02:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:23,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:02:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:02:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:23,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:23,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:23,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:02:23,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:23,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:23,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:23,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:23,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:23,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269023437] [2020-10-28 15:02:23,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:23,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:02:23,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484429423] [2020-10-28 15:02:23,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:02:23,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:23,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:02:23,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:02:23,798 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-28 15:02:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:23,861 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2020-10-28 15:02:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:02:23,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 15:02:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:23,873 INFO L225 Difference]: With dead ends: 43 [2020-10-28 15:02:23,873 INFO L226 Difference]: Without dead ends: 18 [2020-10-28 15:02:23,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:02:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-28 15:02:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-28 15:02:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-28 15:02:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-28 15:02:23,933 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2020-10-28 15:02:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:23,933 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-28 15:02:23,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:02:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-28 15:02:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:02:23,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:23,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:23,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:02:23,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1804204828, now seen corresponding path program 1 times [2020-10-28 15:02:23,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348064067] [2020-10-28 15:02:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:24,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:24,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:02:24,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:24,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 15:02:24,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:24,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:24,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:02:24,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:24,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:02:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:24,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:24,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:24,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:02:24,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:24,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:24,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348064067] [2020-10-28 15:02:24,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:24,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:02:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596219051] [2020-10-28 15:02:24,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:02:24,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:02:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:02:24,394 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2020-10-28 15:02:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:24,590 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-28 15:02:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:02:24,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-28 15:02:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:24,592 INFO L225 Difference]: With dead ends: 28 [2020-10-28 15:02:24,592 INFO L226 Difference]: Without dead ends: 20 [2020-10-28 15:02:24,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:02:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-28 15:02:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-28 15:02:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 15:02:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-28 15:02:24,600 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-10-28 15:02:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:24,601 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-28 15:02:24,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:02:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-28 15:02:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:02:24,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:24,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:24,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:02:24,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1289977208, now seen corresponding path program 1 times [2020-10-28 15:02:24,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:24,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572343243] [2020-10-28 15:02:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 15:02:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 15:02:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:24,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:02:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:02:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:24,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:24,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:24,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:02:24,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:24,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:24,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572343243] [2020-10-28 15:02:24,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:24,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:02:24,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153252464] [2020-10-28 15:02:24,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:02:24,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:02:24,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:02:24,948 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2020-10-28 15:02:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:25,285 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-28 15:02:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:02:25,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-28 15:02:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:25,287 INFO L225 Difference]: With dead ends: 33 [2020-10-28 15:02:25,287 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 15:02:25,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:02:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 15:02:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-28 15:02:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 15:02:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-28 15:02:25,294 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2020-10-28 15:02:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:25,295 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-28 15:02:25,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:02:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-28 15:02:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:02:25,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:25,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:25,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:02:25,296 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:25,297 INFO L82 PathProgramCache]: Analyzing trace with hash 703171194, now seen corresponding path program 1 times [2020-10-28 15:02:25,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:25,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981334543] [2020-10-28 15:02:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:25,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 15:02:25,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:02:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 15:02:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:25,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:02:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:02:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:02:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:25,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:25,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:25,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:02:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:25,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 15:02:25,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981334543] [2020-10-28 15:02:25,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:25,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:02:25,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011093780] [2020-10-28 15:02:25,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:02:25,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:25,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:02:25,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:02:25,441 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-28 15:02:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:25,500 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-28 15:02:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:02:25,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-28 15:02:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:25,501 INFO L225 Difference]: With dead ends: 36 [2020-10-28 15:02:25,501 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 15:02:25,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:02:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 15:02:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 15:02:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 15:02:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 15:02:25,508 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2020-10-28 15:02:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 15:02:25,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:02:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 15:02:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:02:25,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:25,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:25,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:02:25,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1478904932, now seen corresponding path program 2 times [2020-10-28 15:02:25,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:25,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611114365] [2020-10-28 15:02:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:02:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:02:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:02:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:25,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611114365] [2020-10-28 15:02:25,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:25,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:02:25,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576865871] [2020-10-28 15:02:25,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:02:25,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:02:25,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:02:25,914 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2020-10-28 15:02:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:26,292 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-28 15:02:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:02:26,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-28 15:02:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:26,294 INFO L225 Difference]: With dead ends: 36 [2020-10-28 15:02:26,294 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 15:02:26,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:02:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 15:02:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-28 15:02:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 15:02:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-28 15:02:26,300 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2020-10-28 15:02:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:26,301 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-28 15:02:26,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:02:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-28 15:02:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:02:26,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:26,302 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:26,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:02:26,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:26,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:26,303 INFO L82 PathProgramCache]: Analyzing trace with hash 892098918, now seen corresponding path program 1 times [2020-10-28 15:02:26,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:26,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129190322] [2020-10-28 15:02:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:02:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:02:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:02:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:26,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:26,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:02:26,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:26,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:26,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:26,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 15:02:26,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129190322] [2020-10-28 15:02:26,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:26,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:02:26,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963020679] [2020-10-28 15:02:26,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:02:26,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:26,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:02:26,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:02:26,627 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-10-28 15:02:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:26,728 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-28 15:02:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:02:26,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 15:02:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:26,730 INFO L225 Difference]: With dead ends: 39 [2020-10-28 15:02:26,730 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 15:02:26,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:02:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 15:02:26,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 15:02:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 15:02:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-28 15:02:26,735 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2020-10-28 15:02:26,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:26,736 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-28 15:02:26,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:02:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-28 15:02:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 15:02:26,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:26,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:26,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:02:26,737 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:26,738 INFO L82 PathProgramCache]: Analyzing trace with hash -877394440, now seen corresponding path program 3 times [2020-10-28 15:02:26,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:26,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308589907] [2020-10-28 15:02:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:26,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:26,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:02:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:26,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:02:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:27,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:27,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:27,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:02:27,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:27,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:27,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308589907] [2020-10-28 15:02:27,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:27,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 15:02:27,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847170473] [2020-10-28 15:02:27,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:02:27,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:27,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:02:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:02:27,293 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2020-10-28 15:02:29,710 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-28 15:02:30,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:30,047 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-28 15:02:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:02:30,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-28 15:02:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:30,052 INFO L225 Difference]: With dead ends: 37 [2020-10-28 15:02:30,052 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 15:02:30,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:02:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 15:02:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 15:02:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 15:02:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-28 15:02:30,057 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 25 [2020-10-28 15:02:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:30,058 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-28 15:02:30,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:02:30,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-28 15:02:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 15:02:30,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:30,059 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:30,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:02:30,059 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:30,060 INFO L82 PathProgramCache]: Analyzing trace with hash -446499868, now seen corresponding path program 4 times [2020-10-28 15:02:30,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:30,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677959047] [2020-10-28 15:02:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:30,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:30,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:02:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 15:02:30,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:30,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 15:02:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 15:02:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:30,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:30,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:02:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:30,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:30,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677959047] [2020-10-28 15:02:30,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:30,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 15:02:30,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802751969] [2020-10-28 15:02:30,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:02:30,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:02:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:02:30,755 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 14 states. [2020-10-28 15:02:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:33,638 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-28 15:02:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:02:33,639 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-28 15:02:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:33,640 INFO L225 Difference]: With dead ends: 40 [2020-10-28 15:02:33,640 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 15:02:33,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-28 15:02:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 15:02:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 15:02:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 15:02:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-28 15:02:33,654 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2020-10-28 15:02:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:33,655 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-28 15:02:33,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:02:33,657 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-28 15:02:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 15:02:33,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:33,658 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:33,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:02:33,658 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:33,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:33,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1323553160, now seen corresponding path program 5 times [2020-10-28 15:02:33,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:33,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047652969] [2020-10-28 15:02:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:34,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:34,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 15:02:34,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-28 15:02:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:34,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 15:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 15:02:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:35,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:02:35,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:35,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:35,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047652969] [2020-10-28 15:02:35,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:35,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 15:02:35,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577499564] [2020-10-28 15:02:35,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 15:02:35,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:35,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 15:02:35,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:02:35,558 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 16 states. [2020-10-28 15:02:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:40,808 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-28 15:02:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 15:02:40,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-10-28 15:02:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:40,810 INFO L225 Difference]: With dead ends: 43 [2020-10-28 15:02:40,810 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 15:02:40,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=89, Invalid=722, Unknown=1, NotChecked=0, Total=812 [2020-10-28 15:02:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 15:02:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 15:02:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 15:02:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-28 15:02:40,815 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 31 [2020-10-28 15:02:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:40,816 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-28 15:02:40,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 15:02:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-28 15:02:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 15:02:40,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:40,819 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:40,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:02:40,819 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash 962853732, now seen corresponding path program 6 times [2020-10-28 15:02:40,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:40,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564622752] [2020-10-28 15:02:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:41,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:41,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 15:02:41,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 15:02:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:41,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564622752] [2020-10-28 15:02:41,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:41,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 15:02:41,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295824440] [2020-10-28 15:02:41,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 15:02:41,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 15:02:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:02:41,872 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2020-10-28 15:02:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:43,049 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-10-28 15:02:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:02:43,051 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2020-10-28 15:02:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:43,052 INFO L225 Difference]: With dead ends: 46 [2020-10-28 15:02:43,052 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 15:02:43,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 15:02:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 15:02:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 15:02:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 15:02:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-28 15:02:43,068 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 34 [2020-10-28 15:02:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:43,069 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-28 15:02:43,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 15:02:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-28 15:02:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 15:02:43,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:43,070 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:43,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:02:43,071 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1424226040, now seen corresponding path program 7 times [2020-10-28 15:02:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:43,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732846829] [2020-10-28 15:02:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:43,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:43,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 15:02:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 15:02:43,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:43,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 15:02:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 15:02:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:44,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:44,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:02:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:44,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732846829] [2020-10-28 15:02:44,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:02:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 15:02:44,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924764436] [2020-10-28 15:02:44,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 15:02:44,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 15:02:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-28 15:02:44,777 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 20 states. [2020-10-28 15:02:45,045 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 57 [2020-10-28 15:02:45,239 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 54 [2020-10-28 15:02:52,197 WARN L193 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2020-10-28 15:02:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:52,496 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-28 15:02:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:02:52,497 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 37 [2020-10-28 15:02:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:52,497 INFO L225 Difference]: With dead ends: 38 [2020-10-28 15:02:52,497 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:02:52,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2020-10-28 15:02:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:02:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:02:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:02:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:02:52,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-28 15:02:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:52,499 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:02:52,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 15:02:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:02:52,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:02:52,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:02:52,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:02:52,779 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 23 [2020-10-28 15:02:52,788 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:02:52,789 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:02:52,789 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:02:52,789 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:02:52,789 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:02:52,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:02:52,790 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)|)) [2020-10-28 15:02:52,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:02:52,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:02:52,790 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:02:52,790 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:02:52,790 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point L35-2(lines 24 49) no Hoare annotation was computed. [2020-10-28 15:02:52,791 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 49) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse5 (div main_~b~0 4294967296)) (.cse0 (div main_~a~0 4294967296))) (let ((.cse2 (* 4294967296 .cse0)) (.cse4 (* 4294967296 .cse5))) (let ((.cse1 (+ .cse4 main_~a~0)) (.cse3 (+ .cse2 main_~b~0))) (or (and (< 0 (+ .cse0 1)) (< .cse1 (+ .cse2 main_~b~0 1)) (<= .cse3 .cse1)) (and (< .cse3 (+ .cse4 main_~a~0 1)) (<= .cse1 .cse3) (<= .cse0 .cse5)))))) [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 49) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 49) the Hoare annotation is: true [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point L39-2(lines 24 49) no Hoare annotation was computed. [2020-10-28 15:02:52,792 INFO L274 CegarLoopResult]: For program point L35(lines 35 44) no Hoare annotation was computed. [2020-10-28 15:02:52,793 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:02:52,793 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-28 15:02:52,793 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:02:52,793 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 15:02:52,793 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 15:02:52,793 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 15:02:52,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:02:52 BoogieIcfgContainer [2020-10-28 15:02:52,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:02:52,802 INFO L168 Benchmark]: Toolchain (without parser) took 30781.70 ms. Allocated memory was 155.2 MB in the beginning and 229.6 MB in the end (delta: 74.4 MB). Free memory was 110.4 MB in the beginning and 123.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:52,803 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:02:52,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.27 ms. Allocated memory is still 155.2 MB. Free memory was 109.9 MB in the beginning and 100.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:52,808 INFO L168 Benchmark]: Boogie Preprocessor took 84.59 ms. Allocated memory is still 155.2 MB. Free memory was 100.2 MB in the beginning and 138.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:52,809 INFO L168 Benchmark]: RCFGBuilder took 391.98 ms. Allocated memory is still 155.2 MB. Free memory was 138.4 MB in the beginning and 123.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:52,812 INFO L168 Benchmark]: TraceAbstraction took 30033.04 ms. Allocated memory was 155.2 MB in the beginning and 229.6 MB in the end (delta: 74.4 MB). Free memory was 123.3 MB in the beginning and 123.7 MB in the end (delta: -458.9 kB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:52,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.27 ms. Allocated memory is still 155.2 MB. Free memory was 109.9 MB in the beginning and 100.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.59 ms. Allocated memory is still 155.2 MB. Free memory was 100.2 MB in the beginning and 138.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 391.98 ms. Allocated memory is still 155.2 MB. Free memory was 138.4 MB in the beginning and 123.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30033.04 ms. Allocated memory was 155.2 MB in the beginning and 229.6 MB in the end (delta: 74.4 MB). Free memory was 123.3 MB in the beginning and 123.7 MB in the end (delta: -458.9 kB). Peak memory consumption was 74.4 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.5s, OverallIterations: 11, TraceHistogramMax: 8, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 241 SDslu, 479 SDs, 0 SdLazy, 1437 SolverSat, 105 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 38 PreInvPairs, 43 NumberOfFragments, 112 HoareAnnotationTreeSize, 38 FomulaSimplifications, 81 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 304 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 268 NumberOfCodeBlocks, 268 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 110863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 9/233 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...