/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:19:19,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:19:19,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:19:19,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:19:19,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:19:19,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:19:19,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:19:19,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:19:19,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:19:19,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:19:19,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:19:19,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:19:19,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:19:19,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:19:19,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:19:19,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:19:19,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:19:19,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:19:19,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:19:19,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:19:19,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:19:19,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:19:19,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:19:19,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:19:19,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:19:19,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:19:19,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:19:19,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:19:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:19:19,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:19:19,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:19:19,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:19:19,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:19:19,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:19:19,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:19:19,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:19:19,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:19:19,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:19:19,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:19:19,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:19:19,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:19:19,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:19:19,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:19:19,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:19:19,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:19:19,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:19:19,372 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:19:19,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:19:19,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:19:19,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:19:19,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:19:19,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:19:19,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:19:19,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:19:19,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:19:19,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:19:19,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:19:19,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:19:19,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:19:19,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:19:19,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:19:19,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:19:19,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:19:19,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:19:19,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:19:19,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:19:19,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:19:19,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:19:19,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:19:19,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:19:19,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:19:19,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:19:19,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:19:19,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:19:19,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:19:19,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:19:19,877 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:19:19,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 12:19:19,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c66b3935e/bc030bf68b964d9d861e4cfa91422a58/FLAGee46a9c2c [2020-09-25 12:19:20,481 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:19:20,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 12:19:20,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c66b3935e/bc030bf68b964d9d861e4cfa91422a58/FLAGee46a9c2c [2020-09-25 12:19:20,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c66b3935e/bc030bf68b964d9d861e4cfa91422a58 [2020-09-25 12:19:20,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:19:20,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:19:20,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:20,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:19:20,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:19:20,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:20" (1/1) ... [2020-09-25 12:19:20,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217a2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:20, skipping insertion in model container [2020-09-25 12:19:20,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:20" (1/1) ... [2020-09-25 12:19:20,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:19:20,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:19:21,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:21,196 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:19:21,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:21,237 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:19:21,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21 WrapperNode [2020-09-25 12:19:21,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:21,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:19:21,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:19:21,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:19:21,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... [2020-09-25 12:19:21,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:19:21,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:19:21,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:19:21,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:19:21,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:19:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:19:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:19:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 12:19:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 12:19:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 12:19:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 12:19:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:19:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:19:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 12:19:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:19:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 12:19:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 12:19:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 12:19:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 12:19:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 12:19:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 12:19:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 12:19:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 12:19:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:19:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:19:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:19:21,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:19:21,848 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:19:21,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:21 BoogieIcfgContainer [2020-09-25 12:19:21,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:19:21,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:19:21,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:19:21,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:19:21,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:19:20" (1/3) ... [2020-09-25 12:19:21,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6d2329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:21, skipping insertion in model container [2020-09-25 12:19:21,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:21" (2/3) ... [2020-09-25 12:19:21,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6d2329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:21, skipping insertion in model container [2020-09-25 12:19:21,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:21" (3/3) ... [2020-09-25 12:19:21,864 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 12:19:21,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:19:21,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:19:21,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:19:21,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:19:21,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:19:21,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:19:21,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:19:21,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:19:21,942 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:19:21,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:19:21,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:19:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 12:19:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 12:19:21,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:21,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:21,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 12:19:21,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:21,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369598507] [2020-09-25 12:19:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:19:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:19:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 12:19:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:22,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:19:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 12:19:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:19:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 12:19:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:22,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:19:22,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:22,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 12:19:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:19:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:22,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:19:22,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:22,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369598507] [2020-09-25 12:19:22,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:22,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:19:22,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263381765] [2020-09-25 12:19:22,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:19:22,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:19:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:19:22,558 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-25 12:19:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:22,912 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-25 12:19:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:19:22,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 12:19:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:22,932 INFO L225 Difference]: With dead ends: 265 [2020-09-25 12:19:22,933 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 12:19:22,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:19:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 12:19:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 12:19:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 12:19:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 12:19:23,020 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-25 12:19:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:23,021 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 12:19:23,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:19:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 12:19:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:19:23,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:23,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:23,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:19:23,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:23,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 12:19:23,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:23,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463896648] [2020-09-25 12:19:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:23,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:19:23,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:19:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-09-25 12:19:23,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:23,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:19:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:19:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:19:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:23,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:23,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:19:23,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:23,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:23,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:23,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:19:23,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:23,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:19:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:19:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:23,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:23,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:19:23,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:23,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:19:23,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:23,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463896648] [2020-09-25 12:19:23,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:23,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:19:23,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940517946] [2020-09-25 12:19:23,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:19:23,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:23,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:19:23,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:19:23,868 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 12:19:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:24,172 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 12:19:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:19:24,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 12:19:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:24,176 INFO L225 Difference]: With dead ends: 411 [2020-09-25 12:19:24,176 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 12:19:24,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:19:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 12:19:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 12:19:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 12:19:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 12:19:24,208 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 12:19:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:24,208 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 12:19:24,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:19:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 12:19:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 12:19:24,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:24,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:24,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:19:24,212 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 12:19:24,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:24,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563081501] [2020-09-25 12:19:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:24,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:19:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:19:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-09-25 12:19:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:26,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:19:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:19:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:19:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:26,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:26,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:19:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:19:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:26,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:19:26,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:19:26,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:26,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:26,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:19:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 12:19:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:19:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:26,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563081501] [2020-09-25 12:19:26,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:19:26,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:19:26,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632132937] [2020-09-25 12:19:26,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:19:26,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:19:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:19:26,161 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-25 12:19:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:26,561 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-25 12:19:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:19:26,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 12:19:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:26,565 INFO L225 Difference]: With dead ends: 573 [2020-09-25 12:19:26,565 INFO L226 Difference]: Without dead ends: 387 [2020-09-25 12:19:26,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:19:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-25 12:19:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-25 12:19:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-25 12:19:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-25 12:19:26,587 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-25 12:19:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:26,588 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-25 12:19:26,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:19:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-25 12:19:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:19:26,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:26,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:26,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:19:26,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-25 12:19:26,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:26,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123975893] [2020-09-25 12:19:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:26,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:30,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:30,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:19:30,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:19:30,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4324 [2020-09-25 12:19:30,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:30,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:30,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:19:30,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:19:30,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 12:19:30,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:19:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:31,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:19:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:31,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:31,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:19:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:31,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:19:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:19:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:19:31,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:19:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:31,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:31,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:19:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:19:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:19:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:19:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:19:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:31,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 12:19:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:19:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:31,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:19:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:31,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:19:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:31,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123975893] [2020-09-25 12:19:31,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:19:31,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:19:31,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057888761] [2020-09-25 12:19:31,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:19:31,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:19:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:19:31,117 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 10 states. [2020-09-25 12:19:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:31,682 INFO L93 Difference]: Finished difference Result 735 states and 963 transitions. [2020-09-25 12:19:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:19:31,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 12:19:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:31,691 INFO L225 Difference]: With dead ends: 735 [2020-09-25 12:19:31,692 INFO L226 Difference]: Without dead ends: 509 [2020-09-25 12:19:31,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:19:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-09-25 12:19:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 280. [2020-09-25 12:19:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-25 12:19:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 355 transitions. [2020-09-25 12:19:31,731 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 355 transitions. Word has length 79 [2020-09-25 12:19:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:31,733 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 355 transitions. [2020-09-25 12:19:31,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:19:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 355 transitions. [2020-09-25 12:19:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 12:19:31,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:31,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:31,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:19:31,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:31,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-25 12:19:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854294023] [2020-09-25 12:19:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 12:19:32,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:19:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-09-25 12:19:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:19:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:19:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 12:19:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:32,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:32,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:32,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:32,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:32,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:32,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:19:32,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 12:19:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:19:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:19:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:19:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:19:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:19:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:19:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:19:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:19:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:19:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:19:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:19:32,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:19:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 12:19:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:32,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:32,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:32,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:32,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:32,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:32,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:19:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 12:19:32,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854294023] [2020-09-25 12:19:32,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:32,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:19:32,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602708050] [2020-09-25 12:19:32,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:19:32,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:32,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:19:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:19:32,581 INFO L87 Difference]: Start difference. First operand 280 states and 355 transitions. Second operand 7 states. [2020-09-25 12:19:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:32,910 INFO L93 Difference]: Finished difference Result 1092 states and 1427 transitions. [2020-09-25 12:19:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:19:32,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-09-25 12:19:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:32,916 INFO L225 Difference]: With dead ends: 1092 [2020-09-25 12:19:32,917 INFO L226 Difference]: Without dead ends: 826 [2020-09-25 12:19:32,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:19:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-09-25 12:19:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 513. [2020-09-25 12:19:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 12:19:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 658 transitions. [2020-09-25 12:19:32,945 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 658 transitions. Word has length 101 [2020-09-25 12:19:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:32,946 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 658 transitions. [2020-09-25 12:19:32,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:19:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 658 transitions. [2020-09-25 12:19:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 12:19:32,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:32,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:32,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:19:32,949 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash 699841995, now seen corresponding path program 1 times [2020-09-25 12:19:32,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:32,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481044445] [2020-09-25 12:19:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:19:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 12:19:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:19:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 12:19:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:19:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:19:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:33,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:33,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:19:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:19:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:19:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:19:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:33,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:33,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:33,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:19:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:19:33,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:19:33,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 12:19:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 12:19:33,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:19:33,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:19:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:19:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 12:19:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:33,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:33,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:19:33,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:19:33,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:33,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:19:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 12:19:33,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481044445] [2020-09-25 12:19:33,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:33,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:19:33,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580205968] [2020-09-25 12:19:33,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:19:33,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:19:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:19:33,284 INFO L87 Difference]: Start difference. First operand 513 states and 658 transitions. Second operand 6 states. [2020-09-25 12:19:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:33,561 INFO L93 Difference]: Finished difference Result 1221 states and 1581 transitions. [2020-09-25 12:19:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:19:33,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-09-25 12:19:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:33,567 INFO L225 Difference]: With dead ends: 1221 [2020-09-25 12:19:33,568 INFO L226 Difference]: Without dead ends: 722 [2020-09-25 12:19:33,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:19:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-25 12:19:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 513. [2020-09-25 12:19:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 12:19:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 654 transitions. [2020-09-25 12:19:33,594 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 654 transitions. Word has length 102 [2020-09-25 12:19:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:33,595 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 654 transitions. [2020-09-25 12:19:33,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:19:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 654 transitions. [2020-09-25 12:19:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 12:19:33,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:33,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:33,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:19:33,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 12:19:33,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:33,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108790335] [2020-09-25 12:19:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:19:33,618 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:19:33,618 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:19:33,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:19:33,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:19:33 BoogieIcfgContainer [2020-09-25 12:19:33,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:19:33,662 INFO L168 Benchmark]: Toolchain (without parser) took 12832.73 ms. Allocated memory was 146.3 MB in the beginning and 340.3 MB in the end (delta: 194.0 MB). Free memory was 102.5 MB in the beginning and 247.2 MB in the end (delta: -144.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:33,663 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:19:33,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.54 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:33,671 INFO L168 Benchmark]: Boogie Preprocessor took 132.76 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.5 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:33,672 INFO L168 Benchmark]: RCFGBuilder took 483.04 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 159.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:33,673 INFO L168 Benchmark]: TraceAbstraction took 11801.44 ms. Allocated memory was 202.9 MB in the beginning and 340.3 MB in the end (delta: 137.4 MB). Free memory was 158.6 MB in the beginning and 247.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:33,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.54 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.76 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.5 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.04 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 159.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11801.44 ms. Allocated memory was 202.9 MB in the beginning and 340.3 MB in the end (delta: 137.4 MB). Free memory was 158.6 MB in the beginning and 247.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 672 SDtfs, 1275 SDslu, 1872 SDs, 0 SdLazy, 1022 SolverSat, 341 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 967 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 78086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 101/129 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 incorrect! Received shutdown request...