/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:59:36,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:59:36,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:59:36,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:59:36,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:59:36,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:59:36,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:59:36,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:59:36,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:59:36,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:59:36,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:59:36,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:59:36,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:59:36,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:59:36,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:59:36,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:59:36,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:59:36,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:59:36,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:59:36,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:59:36,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:59:36,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:59:36,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:59:36,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:59:36,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:59:36,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:59:36,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:59:36,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:59:36,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:59:36,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:59:36,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:59:36,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:59:36,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:59:36,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:59:36,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:59:36,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:59:36,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:59:36,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:59:36,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:59:36,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:59:36,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:59:36,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:59:36,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:59:36,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:59:36,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:59:36,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:59:36,226 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:59:36,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:59:36,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:59:36,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:59:36,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:59:36,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:59:36,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:59:36,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:59:36,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:59:36,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:59:36,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:59:36,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:59:36,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:59:36,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:59:36,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:59:36,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:59:36,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:59:36,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:59:36,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:59:36,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:59:36,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:59:36,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:59:36,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:59:36,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:59:36,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:59:36,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:59:36,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:59:36,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:59:36,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:59:36,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:59:36,718 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:59:36,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52.c [2020-10-28 13:59:36,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a229e3c/815f2243c70c4fdb8a81114f370026dd/FLAG442e257b3 [2020-10-28 13:59:37,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:59:37,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label52.c [2020-10-28 13:59:37,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a229e3c/815f2243c70c4fdb8a81114f370026dd/FLAG442e257b3 [2020-10-28 13:59:38,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a229e3c/815f2243c70c4fdb8a81114f370026dd [2020-10-28 13:59:38,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:59:38,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:59:38,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:59:38,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:59:38,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:59:38,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:59:38" (1/1) ... [2020-10-28 13:59:38,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489b8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:38, skipping insertion in model container [2020-10-28 13:59:38,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:59:38" (1/1) ... [2020-10-28 13:59:38,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:59:38,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:59:39,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:59:39,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:59:40,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:59:40,384 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:59:40,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40 WrapperNode [2020-10-28 13:59:40,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:59:40,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:59:40,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:59:40,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:59:40,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... [2020-10-28 13:59:40,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:59:40,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:59:40,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:59:40,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:59:40,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:59:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:59:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:59:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:59:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:59:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:59:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:59:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:59:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:59:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:59:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:59:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:59:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:59:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:59:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:59:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:59:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:59:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:59:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:59:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:59:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:59:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:59:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:59:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:59:45,291 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:59:45,292 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:59:45,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:59:45 BoogieIcfgContainer [2020-10-28 13:59:45,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:59:45,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:59:45,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:59:45,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:59:45,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:59:38" (1/3) ... [2020-10-28 13:59:45,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f3be3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:59:45, skipping insertion in model container [2020-10-28 13:59:45,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:59:40" (2/3) ... [2020-10-28 13:59:45,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f3be3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:59:45, skipping insertion in model container [2020-10-28 13:59:45,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:59:45" (3/3) ... [2020-10-28 13:59:45,305 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label52.c [2020-10-28 13:59:45,319 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:59:45,327 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:59:45,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:59:45,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:59:45,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:59:45,408 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:59:45,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:59:45,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:59:45,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:59:45,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:59:45,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:59:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:59:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 13:59:45,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:45,457 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] [2020-10-28 13:59:45,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash -118491560, now seen corresponding path program 1 times [2020-10-28 13:59:45,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:45,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324112029] [2020-10-28 13:59:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:46,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:46,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 13:59:46,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-28 13:59:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 13:59:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:59:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:46,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:46,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:46,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:59:46,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:46,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:46,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324112029] [2020-10-28 13:59:46,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:46,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:59:46,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214665585] [2020-10-28 13:59:46,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:59:46,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:46,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:59:46,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:59:46,575 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 14:00:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:01,110 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-28 14:00:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:00:01,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 14:00:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:01,161 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 14:00:01,162 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 14:00:01,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 14:00:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 14:00:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 14:00:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-28 14:00:01,389 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 23 [2020-10-28 14:00:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:01,389 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-28 14:00:01,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:00:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-28 14:00:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 14:00:01,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:01,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:01,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:00:01,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:01,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1547853931, now seen corresponding path program 1 times [2020-10-28 14:00:01,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:01,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078020113] [2020-10-28 14:00:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:02,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:00:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:00:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:02,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:00:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:00:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 14:00:02,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:02,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:02,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 14:00:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:00:02,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078020113] [2020-10-28 14:00:02,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:00:02,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:00:02,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885474153] [2020-10-28 14:00:02,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:02,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:02,685 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-28 14:00:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:14,082 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-28 14:00:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:14,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 14:00:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:14,119 INFO L225 Difference]: With dead ends: 6511 [2020-10-28 14:00:14,119 INFO L226 Difference]: Without dead ends: 4381 [2020-10-28 14:00:14,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-28 14:00:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3598. [2020-10-28 14:00:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-28 14:00:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5300 transitions. [2020-10-28 14:00:14,258 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5300 transitions. Word has length 111 [2020-10-28 14:00:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5300 transitions. [2020-10-28 14:00:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5300 transitions. [2020-10-28 14:00:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 14:00:14,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:14,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:00:14,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:00:14,264 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1280324762, now seen corresponding path program 1 times [2020-10-28 14:00:14,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:14,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482996712] [2020-10-28 14:00:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 14:00:16,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:00:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-28 14:00:16,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:16,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:00:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:00:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:16,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:16,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:16,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:00:16,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:16,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:16,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:00:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:00:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:00:16,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 14:00:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:16,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 14:00:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:16,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482996712] [2020-10-28 14:00:16,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:16,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:16,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851404555] [2020-10-28 14:00:16,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:16,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:16,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:16,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:16,768 INFO L87 Difference]: Start difference. First operand 3598 states and 5300 transitions. Second operand 7 states. [2020-10-28 14:00:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:28,904 INFO L93 Difference]: Finished difference Result 9364 states and 14373 transitions. [2020-10-28 14:00:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:00:28,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-28 14:00:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:28,936 INFO L225 Difference]: With dead ends: 9364 [2020-10-28 14:00:28,937 INFO L226 Difference]: Without dead ends: 5772 [2020-10-28 14:00:28,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:00:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2020-10-28 14:00:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 5761. [2020-10-28 14:00:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-10-28 14:00:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8241 transitions. [2020-10-28 14:00:29,112 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8241 transitions. Word has length 182 [2020-10-28 14:00:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:29,113 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 8241 transitions. [2020-10-28 14:00:29,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8241 transitions. [2020-10-28 14:00:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 14:00:29,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:29,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:29,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:00:29,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash 557041464, now seen corresponding path program 1 times [2020-10-28 14:00:29,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:29,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553448535] [2020-10-28 14:00:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:29,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:33,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4772 [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:00:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:00:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 14:00:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:34,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:34,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:34,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:00:34,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:34,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:00:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:34,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:34,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:00:34,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:00:34,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:34,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:00:34,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:34,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:00:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 14:00:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 14:00:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:34,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 14:00:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:00:34,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553448535] [2020-10-28 14:00:34,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:34,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:00:34,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218702887] [2020-10-28 14:00:34,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:00:34,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:00:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:00:34,687 INFO L87 Difference]: Start difference. First operand 5761 states and 8241 transitions. Second operand 6 states. [2020-10-28 14:00:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:49,925 INFO L93 Difference]: Finished difference Result 16674 states and 24597 transitions. [2020-10-28 14:00:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:00:49,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2020-10-28 14:00:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:49,995 INFO L225 Difference]: With dead ends: 16674 [2020-10-28 14:00:49,995 INFO L226 Difference]: Without dead ends: 10919 [2020-10-28 14:00:50,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:00:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2020-10-28 14:00:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 10169. [2020-10-28 14:00:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10169 states. [2020-10-28 14:00:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10169 states to 10169 states and 13711 transitions. [2020-10-28 14:00:50,321 INFO L78 Accepts]: Start accepts. Automaton has 10169 states and 13711 transitions. Word has length 229 [2020-10-28 14:00:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:50,323 INFO L481 AbstractCegarLoop]: Abstraction has 10169 states and 13711 transitions. [2020-10-28 14:00:50,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:00:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 10169 states and 13711 transitions. [2020-10-28 14:00:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 14:00:50,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:50,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:50,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:00:50,331 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:50,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1558702724, now seen corresponding path program 1 times [2020-10-28 14:00:50,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:50,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652030486] [2020-10-28 14:00:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 14:00:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:00:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-10-28 14:00:53,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:53,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:00:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:00:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:00:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:53,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:53,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:53,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:53,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:53,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:53,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:00:53,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:00:53,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:53,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:00:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:53,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:00:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:54,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:54,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:00:54,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:54,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 14:00:54,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:54,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:54,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:00:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:54,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652030486] [2020-10-28 14:00:54,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:54,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:54,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58087868] [2020-10-28 14:00:54,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:54,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:54,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:54,528 INFO L87 Difference]: Start difference. First operand 10169 states and 13711 transitions. Second operand 7 states. [2020-10-28 14:01:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:08,479 INFO L93 Difference]: Finished difference Result 22130 states and 30419 transitions. [2020-10-28 14:01:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:01:08,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-28 14:01:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:08,546 INFO L225 Difference]: With dead ends: 22130 [2020-10-28 14:01:08,546 INFO L226 Difference]: Without dead ends: 11253 [2020-10-28 14:01:08,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:01:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2020-10-28 14:01:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 11022. [2020-10-28 14:01:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11022 states. [2020-10-28 14:01:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11022 states to 11022 states and 14747 transitions. [2020-10-28 14:01:08,938 INFO L78 Accepts]: Start accepts. Automaton has 11022 states and 14747 transitions. Word has length 231 [2020-10-28 14:01:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:08,939 INFO L481 AbstractCegarLoop]: Abstraction has 11022 states and 14747 transitions. [2020-10-28 14:01:08,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11022 states and 14747 transitions. [2020-10-28 14:01:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 14:01:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:08,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:08,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:01:08,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:08,946 INFO L82 PathProgramCache]: Analyzing trace with hash -949272732, now seen corresponding path program 1 times [2020-10-28 14:01:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:08,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117879844] [2020-10-28 14:01:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:12,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 14:01:12,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3450 [2020-10-28 14:01:12,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:12,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-28 14:01:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:01:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:01:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:01:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:12,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:12,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 14:01:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:12,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 14:01:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:01:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 14:01:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:01:13,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117879844] [2020-10-28 14:01:13,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:13,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:13,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946948261] [2020-10-28 14:01:13,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:13,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:13,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:13,317 INFO L87 Difference]: Start difference. First operand 11022 states and 14747 transitions. Second operand 7 states. [2020-10-28 14:01:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:28,287 INFO L93 Difference]: Finished difference Result 25333 states and 35338 transitions. [2020-10-28 14:01:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:01:28,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-28 14:01:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:28,362 INFO L225 Difference]: With dead ends: 25333 [2020-10-28 14:01:28,362 INFO L226 Difference]: Without dead ends: 13609 [2020-10-28 14:01:28,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:01:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13609 states. [2020-10-28 14:01:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13609 to 13331. [2020-10-28 14:01:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13331 states. [2020-10-28 14:01:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 17452 transitions. [2020-10-28 14:01:28,781 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 17452 transitions. Word has length 232 [2020-10-28 14:01:28,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:28,782 INFO L481 AbstractCegarLoop]: Abstraction has 13331 states and 17452 transitions. [2020-10-28 14:01:28,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:28,782 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 17452 transitions. [2020-10-28 14:01:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 14:01:28,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:28,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:28,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:01:28,790 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash -976472684, now seen corresponding path program 1 times [2020-10-28 14:01:28,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:28,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612665018] [2020-10-28 14:01:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:28,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 14:01:33,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:01:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4286 [2020-10-28 14:01:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 14:01:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 14:01:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:01:33,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:33,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:01:33,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:33,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 14:01:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 14:01:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 14:01:33,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 14:01:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:33,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 14:01:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 14:01:33,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612665018] [2020-10-28 14:01:33,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:33,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:01:33,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261206711] [2020-10-28 14:01:33,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:01:33,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:33,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:01:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:01:33,826 INFO L87 Difference]: Start difference. First operand 13331 states and 17452 transitions. Second operand 6 states. [2020-10-28 14:01:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:53,346 INFO L93 Difference]: Finished difference Result 38923 states and 54819 transitions. [2020-10-28 14:01:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:01:53,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 247 [2020-10-28 14:01:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:53,453 INFO L225 Difference]: With dead ends: 38923 [2020-10-28 14:01:53,453 INFO L226 Difference]: Without dead ends: 25598 [2020-10-28 14:01:53,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25598 states. [2020-10-28 14:01:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25598 to 24844. [2020-10-28 14:01:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24844 states. [2020-10-28 14:01:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 32659 transitions. [2020-10-28 14:01:54,141 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 32659 transitions. Word has length 247 [2020-10-28 14:01:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 24844 states and 32659 transitions. [2020-10-28 14:01:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:01:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 32659 transitions. [2020-10-28 14:01:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 14:01:54,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:54,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:01:54,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:01:54,148 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1684486144, now seen corresponding path program 1 times [2020-10-28 14:01:54,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:54,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373793512] [2020-10-28 14:01:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 14:01:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4251 [2020-10-28 14:01:58,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-28 14:01:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:01:58,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:01:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:58,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:58,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:58,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 14:01:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 14:01:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:01:59,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:01:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373793512] [2020-10-28 14:01:59,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:59,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:01:59,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048152461] [2020-10-28 14:01:59,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:01:59,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:01:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:59,946 INFO L87 Difference]: Start difference. First operand 24844 states and 32659 transitions. Second operand 8 states. [2020-10-28 14:02:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:20,501 INFO L93 Difference]: Finished difference Result 77346 states and 113279 transitions. [2020-10-28 14:02:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:02:20,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 282 [2020-10-28 14:02:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:20,802 INFO L225 Difference]: With dead ends: 77346 [2020-10-28 14:02:20,802 INFO L226 Difference]: Without dead ends: 52508 [2020-10-28 14:02:20,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:02:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52508 states. [2020-10-28 14:02:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52508 to 52167. [2020-10-28 14:02:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52167 states. [2020-10-28 14:02:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52167 states to 52167 states and 68412 transitions. [2020-10-28 14:02:22,474 INFO L78 Accepts]: Start accepts. Automaton has 52167 states and 68412 transitions. Word has length 282 [2020-10-28 14:02:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:22,475 INFO L481 AbstractCegarLoop]: Abstraction has 52167 states and 68412 transitions. [2020-10-28 14:02:22,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:02:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 52167 states and 68412 transitions. [2020-10-28 14:02:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-28 14:02:22,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:22,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:22,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:02:22,490 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:22,491 INFO L82 PathProgramCache]: Analyzing trace with hash -721342688, now seen corresponding path program 1 times [2020-10-28 14:02:22,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:22,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724485329] [2020-10-28 14:02:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-28 14:02:27,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-28 14:02:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:02:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-28 14:02:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-28 14:02:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 14:02:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 14:02:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:02:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 30 proven. 132 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:02:28,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724485329] [2020-10-28 14:02:28,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:28,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:28,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518795379] [2020-10-28 14:02:28,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:28,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:28,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:28,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:28,629 INFO L87 Difference]: Start difference. First operand 52167 states and 68412 transitions. Second operand 7 states. [2020-10-28 14:02:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:42,242 INFO L93 Difference]: Finished difference Result 113705 states and 148918 transitions. [2020-10-28 14:02:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:02:42,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-28 14:02:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:42,457 INFO L225 Difference]: With dead ends: 113705 [2020-10-28 14:02:42,457 INFO L226 Difference]: Without dead ends: 61544 [2020-10-28 14:02:42,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:02:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61544 states. [2020-10-28 14:02:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61544 to 60790. [2020-10-28 14:02:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60790 states. [2020-10-28 14:02:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60790 states to 60790 states and 77930 transitions. [2020-10-28 14:02:44,276 INFO L78 Accepts]: Start accepts. Automaton has 60790 states and 77930 transitions. Word has length 394 [2020-10-28 14:02:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:44,277 INFO L481 AbstractCegarLoop]: Abstraction has 60790 states and 77930 transitions. [2020-10-28 14:02:44,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 60790 states and 77930 transitions. [2020-10-28 14:02:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-28 14:02:44,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:44,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:44,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:02:44,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:44,300 INFO L82 PathProgramCache]: Analyzing trace with hash -289724467, now seen corresponding path program 1 times [2020-10-28 14:02:44,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:44,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634931544] [2020-10-28 14:02:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-28 14:02:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-28 14:02:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:02:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 14:02:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:02:49,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:02:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-28 14:02:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 14:02:50,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:50,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 14:02:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:50,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-28 14:02:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 14:02:50,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634931544] [2020-10-28 14:02:50,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:50,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:50,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704300907] [2020-10-28 14:02:50,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:50,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:50,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:50,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:50,392 INFO L87 Difference]: Start difference. First operand 60790 states and 77930 transitions. Second operand 7 states. [2020-10-28 14:03:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:09,964 INFO L93 Difference]: Finished difference Result 130728 states and 166042 transitions. [2020-10-28 14:03:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:03:09,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-28 14:03:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:10,223 INFO L225 Difference]: With dead ends: 130728 [2020-10-28 14:03:10,224 INFO L226 Difference]: Without dead ends: 70646 [2020-10-28 14:03:10,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:03:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70646 states. [2020-10-28 14:03:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70646 to 60772. [2020-10-28 14:03:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60772 states. [2020-10-28 14:03:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60772 states to 60772 states and 70812 transitions. [2020-10-28 14:03:11,970 INFO L78 Accepts]: Start accepts. Automaton has 60772 states and 70812 transitions. Word has length 442 [2020-10-28 14:03:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:11,981 INFO L481 AbstractCegarLoop]: Abstraction has 60772 states and 70812 transitions. [2020-10-28 14:03:11,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:03:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 60772 states and 70812 transitions. [2020-10-28 14:03:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-28 14:03:12,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:12,004 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:03:12,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:03:12,005 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:12,005 INFO L82 PathProgramCache]: Analyzing trace with hash -459355642, now seen corresponding path program 1 times [2020-10-28 14:03:12,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:12,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271103714] [2020-10-28 14:03:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking...