/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:43:55,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:43:55,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:43:55,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:43:55,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:43:55,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:43:55,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:43:55,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:43:55,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:43:55,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:43:55,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:43:55,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:43:55,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:43:55,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:43:55,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:43:55,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:43:55,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:43:55,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:43:55,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:43:55,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:43:55,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:43:55,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:43:55,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:43:55,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:43:55,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:43:55,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:43:55,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:43:55,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:43:55,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:43:55,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:43:55,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:43:55,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:43:55,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:43:55,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:43:55,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:43:55,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:43:55,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:43:55,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:43:55,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:43:55,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:43:55,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:43:55,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:43:55,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:43:55,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:43:55,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:43:55,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:43:55,329 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:43:55,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:43:55,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:43:55,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:43:55,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:43:55,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:43:55,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:43:55,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:43:55,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:43:55,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:43:55,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:43:55,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:43:55,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:43:55,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:43:55,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:43:55,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:43:55,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:43:55,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:43:55,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:43:55,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:43:55,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:43:55,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:43:55,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:43:55,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:43:55,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:43:55,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:43:55,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:43:55,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:43:55,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:43:55,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:43:55,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:43:55,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-10-29 09:43:55,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67caf8c9/63ce500e4c534f89818f03f120781184/FLAGf562f18fe [2020-10-29 09:43:56,499 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:43:56,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-10-29 09:43:56,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67caf8c9/63ce500e4c534f89818f03f120781184/FLAGf562f18fe [2020-10-29 09:43:56,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67caf8c9/63ce500e4c534f89818f03f120781184 [2020-10-29 09:43:56,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:43:56,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:43:56,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:56,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:43:56,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:43:56,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:56" (1/1) ... [2020-10-29 09:43:56,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668b76b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:56, skipping insertion in model container [2020-10-29 09:43:56,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:56" (1/1) ... [2020-10-29 09:43:56,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:43:56,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:43:57,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:57,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:43:57,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:57,329 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:43:57,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57 WrapperNode [2020-10-29 09:43:57,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:57,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:43:57,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:43:57,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:43:57,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... [2020-10-29 09:43:57,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:43:57,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:43:57,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:43:57,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:43:57,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:43:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:43:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:43:57,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:43:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:43:57,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:43:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:43:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:43:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:43:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:43:57,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:43:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:43:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:43:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:43:57,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:43:58,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:43:58,473 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:43:58,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:58 BoogieIcfgContainer [2020-10-29 09:43:58,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:43:58,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:43:58,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:43:58,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:43:58,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:43:56" (1/3) ... [2020-10-29 09:43:58,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4baf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:58, skipping insertion in model container [2020-10-29 09:43:58,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:57" (2/3) ... [2020-10-29 09:43:58,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4baf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:58, skipping insertion in model container [2020-10-29 09:43:58,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:58" (3/3) ... [2020-10-29 09:43:58,485 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2020-10-29 09:43:58,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:43:58,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:43:58,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:43:58,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:43:58,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:43:58,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:43:58,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:43:58,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:43:58,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:43:58,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:43:58,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:43:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2020-10-29 09:43:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:43:58,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:58,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:58,584 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash -141150726, now seen corresponding path program 1 times [2020-10-29 09:43:58,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:58,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122987599] [2020-10-29 09:43:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:44:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:44:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 09:44:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:03,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:44:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:44:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:44:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:44:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:03,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:44:03,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:03,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:44:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:04,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122987599] [2020-10-29 09:44:04,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:04,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:44:04,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755014320] [2020-10-29 09:44:04,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:44:04,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:04,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:44:04,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:44:04,055 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 5 states. [2020-10-29 09:44:05,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:05,068 INFO L93 Difference]: Finished difference Result 297 states and 568 transitions. [2020-10-29 09:44:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:44:05,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-29 09:44:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:05,083 INFO L225 Difference]: With dead ends: 297 [2020-10-29 09:44:05,083 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 09:44:05,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:44:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 09:44:05,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-29 09:44:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 09:44:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 212 transitions. [2020-10-29 09:44:05,154 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 212 transitions. Word has length 144 [2020-10-29 09:44:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:05,154 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 212 transitions. [2020-10-29 09:44:05,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:44:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 212 transitions. [2020-10-29 09:44:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:44:05,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:05,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:05,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:44:05,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2087178979, now seen corresponding path program 1 times [2020-10-29 09:44:05,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:05,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601969982] [2020-10-29 09:44:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:05,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:10,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:44:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:44:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:44:10,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:10,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:44:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:44:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:44:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:44:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:44:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:10,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:10,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601969982] [2020-10-29 09:44:10,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:10,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:44:10,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79428013] [2020-10-29 09:44:10,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:44:10,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:44:10,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:44:10,344 INFO L87 Difference]: Start difference. First operand 146 states and 212 transitions. Second operand 6 states. [2020-10-29 09:44:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:11,104 INFO L93 Difference]: Finished difference Result 280 states and 411 transitions. [2020-10-29 09:44:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:44:11,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-29 09:44:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:11,106 INFO L225 Difference]: With dead ends: 280 [2020-10-29 09:44:11,106 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 09:44:11,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:44:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 09:44:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-29 09:44:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 09:44:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2020-10-29 09:44:11,153 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 144 [2020-10-29 09:44:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:11,156 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2020-10-29 09:44:11,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:44:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2020-10-29 09:44:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:44:11,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:11,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:11,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:44:11,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:11,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:11,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1590305782, now seen corresponding path program 1 times [2020-10-29 09:44:11,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:11,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520069628] [2020-10-29 09:44:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:16,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:44:16,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:44:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:44:16,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:16,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:44:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 09:44:16,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:44:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:16,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:16,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520069628] [2020-10-29 09:44:16,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:16,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:44:16,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461729176] [2020-10-29 09:44:16,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:44:16,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:44:16,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:44:16,331 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand 4 states. [2020-10-29 09:44:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:17,234 INFO L93 Difference]: Finished difference Result 404 states and 597 transitions. [2020-10-29 09:44:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:44:17,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-29 09:44:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:17,237 INFO L225 Difference]: With dead ends: 404 [2020-10-29 09:44:17,238 INFO L226 Difference]: Without dead ends: 274 [2020-10-29 09:44:17,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:44:17,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-29 09:44:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-29 09:44:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-29 09:44:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2020-10-29 09:44:17,279 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 144 [2020-10-29 09:44:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:17,279 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2020-10-29 09:44:17,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:44:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2020-10-29 09:44:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:44:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:17,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:17,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:44:17,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1846706505, now seen corresponding path program 1 times [2020-10-29 09:44:17,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451148722] [2020-10-29 09:44:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:22,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 09:44:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 09:44:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 09:44:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:24,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:24,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:24,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451148722] [2020-10-29 09:44:24,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:24,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-10-29 09:44:24,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964105195] [2020-10-29 09:44:24,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 09:44:24,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:24,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 09:44:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 09:44:24,486 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand 53 states. [2020-10-29 09:44:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:49,805 INFO L93 Difference]: Finished difference Result 4114 states and 4229 transitions. [2020-10-29 09:44:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 09:44:49,806 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 144 [2020-10-29 09:44:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:49,819 INFO L225 Difference]: With dead ends: 4114 [2020-10-29 09:44:49,819 INFO L226 Difference]: Without dead ends: 2695 [2020-10-29 09:44:49,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2020-10-29 09:44:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2020-10-29 09:44:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2020-10-29 09:44:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2695 states. [2020-10-29 09:44:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 2795 transitions. [2020-10-29 09:44:50,024 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 2795 transitions. Word has length 144 [2020-10-29 09:44:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:50,024 INFO L481 AbstractCegarLoop]: Abstraction has 2695 states and 2795 transitions. [2020-10-29 09:44:50,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 09:44:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 2795 transitions. [2020-10-29 09:44:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:44:50,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:50,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:50,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:44:50,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash 329898082, now seen corresponding path program 1 times [2020-10-29 09:44:50,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:50,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304944410] [2020-10-29 09:44:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:44:55,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:44:55,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 09:44:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:44:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:57,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304944410] [2020-10-29 09:44:57,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:57,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-10-29 09:44:57,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140708155] [2020-10-29 09:44:57,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 09:44:57,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:57,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 09:44:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 09:44:57,765 INFO L87 Difference]: Start difference. First operand 2695 states and 2795 transitions. Second operand 55 states. [2020-10-29 09:46:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:46:46,833 INFO L93 Difference]: Finished difference Result 2797 states and 2896 transitions. [2020-10-29 09:46:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 09:46:46,833 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 144 [2020-10-29 09:46:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:46:46,847 INFO L225 Difference]: With dead ends: 2797 [2020-10-29 09:46:46,848 INFO L226 Difference]: Without dead ends: 2693 [2020-10-29 09:46:46,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=317, Invalid=11025, Unknown=0, NotChecked=0, Total=11342 [2020-10-29 09:46:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2020-10-29 09:46:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2595. [2020-10-29 09:46:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-10-29 09:46:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 2693 transitions. [2020-10-29 09:46:47,068 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 2693 transitions. Word has length 144 [2020-10-29 09:46:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:46:47,069 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 2693 transitions. [2020-10-29 09:46:47,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 09:46:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 2693 transitions. [2020-10-29 09:46:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 09:46:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:46:47,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:46:47,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:46:47,078 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:46:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:46:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 285123621, now seen corresponding path program 1 times [2020-10-29 09:46:47,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:46:47,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444138783] [2020-10-29 09:46:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:46:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 09:46:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 09:46:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 09:46:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:46:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:46:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:46:54,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:46:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:46:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:46:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:46:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:46:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:46:54,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444138783] [2020-10-29 09:46:54,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:46:54,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-10-29 09:46:54,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457005794] [2020-10-29 09:46:54,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 09:46:54,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:46:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 09:46:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 09:46:54,043 INFO L87 Difference]: Start difference. First operand 2595 states and 2693 transitions. Second operand 53 states. [2020-10-29 09:47:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:47:18,302 INFO L93 Difference]: Finished difference Result 2595 states and 2693 transitions. [2020-10-29 09:47:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 09:47:18,304 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 144 [2020-10-29 09:47:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:47:18,305 INFO L225 Difference]: With dead ends: 2595 [2020-10-29 09:47:18,305 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:47:18,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2020-10-29 09:47:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:47:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:47:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:47:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:47:18,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 144 [2020-10-29 09:47:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:47:18,313 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:47:18,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 09:47:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:47:18,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:47:18,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:47:18,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:47:18,667 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-29 09:47:18,990 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 09:47:19,202 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 09:47:19,348 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-10-29 09:47:19,688 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-29 09:47:19,807 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 09:47:20,138 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-29 09:47:20,274 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-29 09:47:20,380 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 09:47:20,744 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2020-10-29 09:47:24,852 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 308 DAG size of output: 265 [2020-10-29 09:47:25,121 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 31 [2020-10-29 09:47:27,154 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 284 DAG size of output: 223 [2020-10-29 09:47:30,013 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 329 DAG size of output: 307 [2020-10-29 09:47:31,706 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 242 DAG size of output: 181 [2020-10-29 09:47:32,967 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 200 DAG size of output: 139 [2020-10-29 09:47:33,787 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 97 [2020-10-29 09:47:34,230 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 55 [2020-10-29 09:47:36,845 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 317 DAG size of output: 283