/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:39:34,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:39:34,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:39:34,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:39:34,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:39:34,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:39:34,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:39:34,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:39:34,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:39:34,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:39:34,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:39:34,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:39:34,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:39:34,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:39:34,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:39:34,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:39:34,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:39:34,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:39:34,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:39:34,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:39:34,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:39:34,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:39:34,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:39:34,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:39:34,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:39:34,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:39:34,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:39:34,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:39:34,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:39:34,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:39:34,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:39:34,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:39:34,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:39:34,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:39:34,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:39:34,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:39:34,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:39:34,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:39:34,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:39:34,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:39:34,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:39:34,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:39:34,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:39:34,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:39:34,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:39:34,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:39:34,878 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:39:34,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:39:34,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:39:34,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:39:34,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:39:34,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:39:34,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:39:34,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:39:34,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:39:34,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:39:34,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:39:34,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:39:34,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:39:34,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:39:34,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:39:34,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:39:34,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:39:34,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:39:34,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:39:34,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:39:34,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:39:35,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:39:35,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:39:35,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:39:35,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:39:35,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:39:35,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-29 07:39:35,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9c1ffc9/4a7d473a676540b09e02f55e3ee8200d/FLAG286207797 [2020-10-29 07:39:36,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:39:36,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label01.c [2020-10-29 07:39:36,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9c1ffc9/4a7d473a676540b09e02f55e3ee8200d/FLAG286207797 [2020-10-29 07:39:37,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9c1ffc9/4a7d473a676540b09e02f55e3ee8200d [2020-10-29 07:39:37,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:39:37,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:39:37,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:37,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:39:37,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:39:37,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:37" (1/1) ... [2020-10-29 07:39:37,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139b64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:37, skipping insertion in model container [2020-10-29 07:39:37,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:37" (1/1) ... [2020-10-29 07:39:37,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:39:37,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:39:38,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:38,025 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:39:38,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:38,323 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:39:38,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38 WrapperNode [2020-10-29 07:39:38,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:38,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:39:38,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:39:38,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:39:38,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... [2020-10-29 07:39:38,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:39:38,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:39:38,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:39:38,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:39:38,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:39:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:39:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:39:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:39:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:39:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:39:38,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:39:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:39:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:39:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:39:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:39:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:39:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:39:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:39:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:39:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:39:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:39:42,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:39:42,156 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:39:42,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:39:42 BoogieIcfgContainer [2020-10-29 07:39:42,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:39:42,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:39:42,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:39:42,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:39:42,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:39:37" (1/3) ... [2020-10-29 07:39:42,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:39:42, skipping insertion in model container [2020-10-29 07:39:42,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:38" (2/3) ... [2020-10-29 07:39:42,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5830045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:39:42, skipping insertion in model container [2020-10-29 07:39:42,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:39:42" (3/3) ... [2020-10-29 07:39:42,168 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label01.c [2020-10-29 07:39:42,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:39:42,187 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:39:42,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:39:42,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:39:42,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:39:42,238 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:39:42,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:39:42,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:39:42,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:39:42,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:39:42,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:39:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:39:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 07:39:42,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:42,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:39:42,280 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash 758124983, now seen corresponding path program 1 times [2020-10-29 07:39:42,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:42,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75042961] [2020-10-29 07:39:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 07:39:43,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 07:39:43,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:43,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:39:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 07:39:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:39:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:43,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:39:43,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:43,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:39:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:39:43,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75042961] [2020-10-29 07:39:43,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:39:43,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:39:43,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403606713] [2020-10-29 07:39:43,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:39:43,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:39:43,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:39:43,449 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:39:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:49,483 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:39:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:39:49,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-29 07:39:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:49,515 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:39:49,515 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:39:49,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:39:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:39:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:39:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:39:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:39:49,636 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 51 [2020-10-29 07:39:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:49,637 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:39:49,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:39:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:39:49,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 07:39:49,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:49,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:39:49,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:39:49,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:49,646 INFO L82 PathProgramCache]: Analyzing trace with hash 509214977, now seen corresponding path program 1 times [2020-10-29 07:39:49,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:49,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748664002] [2020-10-29 07:39:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:50,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 07:39:50,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-29 07:39:50,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:50,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:39:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:39:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:50,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:39:50,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:50,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:39:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:50,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:50,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:39:50,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:39:50,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:50,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:39:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:39:50,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748664002] [2020-10-29 07:39:50,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:39:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:39:50,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095998702] [2020-10-29 07:39:50,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:50,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:50,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:50,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:50,901 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:40:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:00,942 INFO L93 Difference]: Finished difference Result 2049 states and 3017 transitions. [2020-10-29 07:40:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:40:00,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-29 07:40:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:00,952 INFO L225 Difference]: With dead ends: 2049 [2020-10-29 07:40:00,952 INFO L226 Difference]: Without dead ends: 1363 [2020-10-29 07:40:00,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:40:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-29 07:40:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1337. [2020-10-29 07:40:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-29 07:40:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1730 transitions. [2020-10-29 07:40:01,022 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1730 transitions. Word has length 120 [2020-10-29 07:40:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:01,025 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 1730 transitions. [2020-10-29 07:40:01,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1730 transitions. [2020-10-29 07:40:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 07:40:01,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:01,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:40:01,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:40:01,041 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash -682698205, now seen corresponding path program 1 times [2020-10-29 07:40:01,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:01,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042322997] [2020-10-29 07:40:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:01,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:40:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-29 07:40:01,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:01,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:40:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 07:40:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:02,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:02,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:02,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:02,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:02,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:02,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:40:02,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:40:02,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:02,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:40:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:02,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042322997] [2020-10-29 07:40:02,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:02,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:02,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834138472] [2020-10-29 07:40:02,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:02,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:02,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:02,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:02,314 INFO L87 Difference]: Start difference. First operand 1337 states and 1730 transitions. Second operand 5 states. [2020-10-29 07:40:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:10,526 INFO L93 Difference]: Finished difference Result 2719 states and 3517 transitions. [2020-10-29 07:40:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:10,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-29 07:40:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:10,539 INFO L225 Difference]: With dead ends: 2719 [2020-10-29 07:40:10,539 INFO L226 Difference]: Without dead ends: 1346 [2020-10-29 07:40:10,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-29 07:40:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1337. [2020-10-29 07:40:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-29 07:40:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1717 transitions. [2020-10-29 07:40:10,585 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1717 transitions. Word has length 146 [2020-10-29 07:40:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:10,586 INFO L481 AbstractCegarLoop]: Abstraction has 1337 states and 1717 transitions. [2020-10-29 07:40:10,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1717 transitions. [2020-10-29 07:40:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 07:40:10,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:10,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:10,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:40:10,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:10,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:10,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2068995471, now seen corresponding path program 1 times [2020-10-29 07:40:10,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:10,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235877479] [2020-10-29 07:40:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:13,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:40:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:13,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:13,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:40:13,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 07:40:13,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:13,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:13,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:13,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 07:40:13,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:14,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235877479] [2020-10-29 07:40:14,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:14,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:14,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072406480] [2020-10-29 07:40:14,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:14,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:14,111 INFO L87 Difference]: Start difference. First operand 1337 states and 1717 transitions. Second operand 7 states. [2020-10-29 07:40:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:21,995 INFO L93 Difference]: Finished difference Result 3014 states and 3797 transitions. [2020-10-29 07:40:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:40:21,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-29 07:40:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:22,007 INFO L225 Difference]: With dead ends: 3014 [2020-10-29 07:40:22,007 INFO L226 Difference]: Without dead ends: 1683 [2020-10-29 07:40:22,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:40:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-10-29 07:40:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1648. [2020-10-29 07:40:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-10-29 07:40:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2039 transitions. [2020-10-29 07:40:22,061 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2039 transitions. Word has length 213 [2020-10-29 07:40:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:22,062 INFO L481 AbstractCegarLoop]: Abstraction has 1648 states and 2039 transitions. [2020-10-29 07:40:22,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2039 transitions. [2020-10-29 07:40:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 07:40:22,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:22,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:22,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:40:22,066 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:22,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1103779315, now seen corresponding path program 1 times [2020-10-29 07:40:22,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:22,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657246457] [2020-10-29 07:40:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:22,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 07:40:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-29 07:40:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:22,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-29 07:40:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:40:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:22,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:22,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:22,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:40:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 07:40:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:23,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:40:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:23,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657246457] [2020-10-29 07:40:23,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:23,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:23,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126087501] [2020-10-29 07:40:23,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:23,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:23,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:23,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:23,419 INFO L87 Difference]: Start difference. First operand 1648 states and 2039 transitions. Second operand 5 states. [2020-10-29 07:40:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:32,126 INFO L93 Difference]: Finished difference Result 3946 states and 5132 transitions. [2020-10-29 07:40:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:32,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-29 07:40:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:32,144 INFO L225 Difference]: With dead ends: 3946 [2020-10-29 07:40:32,145 INFO L226 Difference]: Without dead ends: 2611 [2020-10-29 07:40:32,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-10-29 07:40:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2600. [2020-10-29 07:40:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-10-29 07:40:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3203 transitions. [2020-10-29 07:40:32,219 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3203 transitions. Word has length 231 [2020-10-29 07:40:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:32,220 INFO L481 AbstractCegarLoop]: Abstraction has 2600 states and 3203 transitions. [2020-10-29 07:40:32,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3203 transitions. [2020-10-29 07:40:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-29 07:40:32,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:32,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:32,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:40:32,226 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1487860272, now seen corresponding path program 1 times [2020-10-29 07:40:32,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:32,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585945452] [2020-10-29 07:40:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:32,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 07:40:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:33,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-29 07:40:33,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:33,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:40:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-29 07:40:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:33,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:33,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:33,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:40:34,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:34,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-29 07:40:34,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:40:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-29 07:40:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:35,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585945452] [2020-10-29 07:40:35,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:35,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:40:35,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629615167] [2020-10-29 07:40:35,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:40:35,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:40:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:35,018 INFO L87 Difference]: Start difference. First operand 2600 states and 3203 transitions. Second operand 8 states. [2020-10-29 07:40:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:49,325 INFO L93 Difference]: Finished difference Result 4985 states and 6300 transitions. [2020-10-29 07:40:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:40:49,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-29 07:40:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:49,362 INFO L225 Difference]: With dead ends: 4985 [2020-10-29 07:40:49,362 INFO L226 Difference]: Without dead ends: 2661 [2020-10-29 07:40:49,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:40:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2020-10-29 07:40:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2615. [2020-10-29 07:40:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-10-29 07:40:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3216 transitions. [2020-10-29 07:40:49,445 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3216 transitions. Word has length 288 [2020-10-29 07:40:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:49,446 INFO L481 AbstractCegarLoop]: Abstraction has 2615 states and 3216 transitions. [2020-10-29 07:40:49,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:40:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3216 transitions. [2020-10-29 07:40:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-29 07:40:49,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:49,451 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:49,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:40:49,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash -345588325, now seen corresponding path program 1 times [2020-10-29 07:40:49,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:49,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865754914] [2020-10-29 07:40:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:54,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:54,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 07:40:54,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4670 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 07:40:54,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:54,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:54,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:54,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:54,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:40:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 07:40:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:54,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 07:40:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:54,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-29 07:40:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:54,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:40:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:40:55,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865754914] [2020-10-29 07:40:55,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:55,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:40:55,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510975838] [2020-10-29 07:40:55,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:40:55,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:40:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:40:55,151 INFO L87 Difference]: Start difference. First operand 2615 states and 3216 transitions. Second operand 8 states. [2020-10-29 07:41:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:06,870 INFO L93 Difference]: Finished difference Result 6260 states and 7975 transitions. [2020-10-29 07:41:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:41:06,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-29 07:41:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:06,896 INFO L225 Difference]: With dead ends: 6260 [2020-10-29 07:41:06,896 INFO L226 Difference]: Without dead ends: 3958 [2020-10-29 07:41:06,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:41:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2020-10-29 07:41:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3865. [2020-10-29 07:41:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3865 states. [2020-10-29 07:41:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 4508 transitions. [2020-10-29 07:41:07,014 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 4508 transitions. Word has length 301 [2020-10-29 07:41:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:07,015 INFO L481 AbstractCegarLoop]: Abstraction has 3865 states and 4508 transitions. [2020-10-29 07:41:07,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 4508 transitions. [2020-10-29 07:41:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-29 07:41:07,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:07,023 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:07,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:41:07,023 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:07,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1233561939, now seen corresponding path program 1 times [2020-10-29 07:41:07,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:07,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267840636] [2020-10-29 07:41:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:07,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:41:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:41:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:08,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:41:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:08,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 07:41:08,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:41:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:41:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:41:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:41:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:09,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267840636] [2020-10-29 07:41:09,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:09,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:41:09,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866895325] [2020-10-29 07:41:09,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:09,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:09,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:09,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:09,324 INFO L87 Difference]: Start difference. First operand 3865 states and 4508 transitions. Second operand 8 states. [2020-10-29 07:41:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:27,116 INFO L93 Difference]: Finished difference Result 10942 states and 13277 transitions. [2020-10-29 07:41:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:41:27,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2020-10-29 07:41:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:27,154 INFO L225 Difference]: With dead ends: 10942 [2020-10-29 07:41:27,154 INFO L226 Difference]: Without dead ends: 7390 [2020-10-29 07:41:27,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-29 07:41:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2020-10-29 07:41:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 7009. [2020-10-29 07:41:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7009 states. [2020-10-29 07:41:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 7965 transitions. [2020-10-29 07:41:27,381 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 7965 transitions. Word has length 394 [2020-10-29 07:41:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:27,382 INFO L481 AbstractCegarLoop]: Abstraction has 7009 states and 7965 transitions. [2020-10-29 07:41:27,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:27,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 7965 transitions. [2020-10-29 07:41:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 07:41:27,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:27,391 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:27,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:41:27,392 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1394009675, now seen corresponding path program 1 times [2020-10-29 07:41:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:27,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607187788] [2020-10-29 07:41:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:29,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-29 07:41:29,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:29,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:29,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:30,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:30,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:30,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:41:30,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:41:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:30,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:30,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:41:30,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:41:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 116 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:31,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607187788] [2020-10-29 07:41:31,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:31,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:41:31,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030789689] [2020-10-29 07:41:31,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:31,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:31,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:31,050 INFO L87 Difference]: Start difference. First operand 7009 states and 7965 transitions. Second operand 8 states. [2020-10-29 07:41:32,719 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:41:33,985 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:41:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:46,051 INFO L93 Difference]: Finished difference Result 15817 states and 18404 transitions. [2020-10-29 07:41:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:46,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2020-10-29 07:41:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:46,099 INFO L225 Difference]: With dead ends: 15817 [2020-10-29 07:41:46,100 INFO L226 Difference]: Without dead ends: 8900 [2020-10-29 07:41:46,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:41:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8900 states. [2020-10-29 07:41:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8900 to 8248. [2020-10-29 07:41:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8248 states. [2020-10-29 07:41:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8248 states to 8248 states and 9145 transitions. [2020-10-29 07:41:46,352 INFO L78 Accepts]: Start accepts. Automaton has 8248 states and 9145 transitions. Word has length 406 [2020-10-29 07:41:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:46,353 INFO L481 AbstractCegarLoop]: Abstraction has 8248 states and 9145 transitions. [2020-10-29 07:41:46,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 8248 states and 9145 transitions. [2020-10-29 07:41:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-29 07:41:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:46,364 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:46,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:41:46,364 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash -921960097, now seen corresponding path program 1 times [2020-10-29 07:41:46,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:46,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344105778] [2020-10-29 07:41:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:49,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3216 [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:41:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:41:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:49,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:49,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:49,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:50,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:41:50,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:41:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:50,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:41:50,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:50,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:41:50,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:50,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344105778] [2020-10-29 07:41:50,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:50,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:50,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597821908] [2020-10-29 07:41:50,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:50,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:50,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:50,886 INFO L87 Difference]: Start difference. First operand 8248 states and 9145 transitions. Second operand 7 states. [2020-10-29 07:42:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:04,419 INFO L93 Difference]: Finished difference Result 16918 states and 19223 transitions. [2020-10-29 07:42:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:04,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-29 07:42:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:04,450 INFO L225 Difference]: With dead ends: 16918 [2020-10-29 07:42:04,450 INFO L226 Difference]: Without dead ends: 8983 [2020-10-29 07:42:04,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8983 states. [2020-10-29 07:42:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8983 to 8917. [2020-10-29 07:42:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8917 states. [2020-10-29 07:42:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 9956 transitions. [2020-10-29 07:42:04,665 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 9956 transitions. Word has length 417 [2020-10-29 07:42:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:04,667 INFO L481 AbstractCegarLoop]: Abstraction has 8917 states and 9956 transitions. [2020-10-29 07:42:04,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 9956 transitions. [2020-10-29 07:42:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-29 07:42:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:04,679 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:04,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:42:04,680 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash -60730146, now seen corresponding path program 1 times [2020-10-29 07:42:04,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:04,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615636947] [2020-10-29 07:42:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:05,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:05,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-29 07:42:05,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-29 07:42:05,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:05,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:42:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 07:42:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:05,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:06,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:42:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:06,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:42:06,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615636947] [2020-10-29 07:42:06,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:06,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:42:06,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869290171] [2020-10-29 07:42:06,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:42:06,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:06,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:42:06,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:42:06,681 INFO L87 Difference]: Start difference. First operand 8917 states and 9956 transitions. Second operand 5 states. [2020-10-29 07:42:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:17,495 INFO L93 Difference]: Finished difference Result 18869 states and 21575 transitions. [2020-10-29 07:42:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:42:17,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 448 [2020-10-29 07:42:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:17,541 INFO L225 Difference]: With dead ends: 18869 [2020-10-29 07:42:17,542 INFO L226 Difference]: Without dead ends: 10265 [2020-10-29 07:42:17,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:42:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2020-10-29 07:42:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 10241. [2020-10-29 07:42:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10241 states. [2020-10-29 07:42:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10241 states to 10241 states and 11789 transitions. [2020-10-29 07:42:17,908 INFO L78 Accepts]: Start accepts. Automaton has 10241 states and 11789 transitions. Word has length 448 [2020-10-29 07:42:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:17,909 INFO L481 AbstractCegarLoop]: Abstraction has 10241 states and 11789 transitions. [2020-10-29 07:42:17,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:42:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10241 states and 11789 transitions. [2020-10-29 07:42:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-29 07:42:17,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:17,915 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:17,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:42:17,915 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash -121860428, now seen corresponding path program 1 times [2020-10-29 07:42:17,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:17,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587231638] [2020-10-29 07:42:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:20,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:20,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-29 07:42:20,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2466 [2020-10-29 07:42:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:20,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 07:42:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:42:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-29 07:42:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:20,824 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:42:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:20,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:20,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:20,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:42:20,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:20,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:42:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:21,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 07:42:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:21,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:42:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:42:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 165 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:42:22,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587231638] [2020-10-29 07:42:22,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:22,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:42:22,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830532567] [2020-10-29 07:42:22,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:42:22,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:22,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:42:22,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:42:22,515 INFO L87 Difference]: Start difference. First operand 10241 states and 11789 transitions. Second operand 9 states. [2020-10-29 07:42:25,684 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:42:40,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:40,578 INFO L93 Difference]: Finished difference Result 25893 states and 30943 transitions. [2020-10-29 07:42:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:40,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 484 [2020-10-29 07:42:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:40,655 INFO L225 Difference]: With dead ends: 25893 [2020-10-29 07:42:40,655 INFO L226 Difference]: Without dead ends: 15753 [2020-10-29 07:42:40,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:42:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15753 states. [2020-10-29 07:42:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15753 to 14931. [2020-10-29 07:42:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14931 states. [2020-10-29 07:42:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14931 states to 14931 states and 17176 transitions. [2020-10-29 07:42:41,197 INFO L78 Accepts]: Start accepts. Automaton has 14931 states and 17176 transitions. Word has length 484 [2020-10-29 07:42:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:41,198 INFO L481 AbstractCegarLoop]: Abstraction has 14931 states and 17176 transitions. [2020-10-29 07:42:41,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:42:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14931 states and 17176 transitions. [2020-10-29 07:42:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-29 07:42:41,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:41,205 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:41,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:42:41,205 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash 355000362, now seen corresponding path program 1 times [2020-10-29 07:42:41,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:41,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27440103] [2020-10-29 07:42:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:41,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:45,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-29 07:42:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:42:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4218 [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 07:42:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:45,839 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:42:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:45,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:45,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:45,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:45,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:45,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:45,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:45,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:46,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:42:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:42:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:46,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:42:46,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:42:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:46,693 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-10-29 07:42:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 265 proven. 5 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-29 07:42:46,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27440103] [2020-10-29 07:42:46,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:46,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:42:46,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368715181] [2020-10-29 07:42:46,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:42:46,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:46,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:42:46,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:42:46,926 INFO L87 Difference]: Start difference. First operand 14931 states and 17176 transitions. Second operand 6 states. [2020-10-29 07:42:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:56,964 INFO L93 Difference]: Finished difference Result 32105 states and 37879 transitions. [2020-10-29 07:42:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 07:42:56,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 520 [2020-10-29 07:42:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:57,035 INFO L225 Difference]: With dead ends: 32105 [2020-10-29 07:42:57,035 INFO L226 Difference]: Without dead ends: 17487 [2020-10-29 07:42:57,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17487 states. [2020-10-29 07:42:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17487 to 17438. [2020-10-29 07:42:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17438 states. [2020-10-29 07:42:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17438 states to 17438 states and 20062 transitions. [2020-10-29 07:42:57,609 INFO L78 Accepts]: Start accepts. Automaton has 17438 states and 20062 transitions. Word has length 520 [2020-10-29 07:42:57,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:57,611 INFO L481 AbstractCegarLoop]: Abstraction has 17438 states and 20062 transitions. [2020-10-29 07:42:57,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:42:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17438 states and 20062 transitions. [2020-10-29 07:42:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-29 07:42:57,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:57,619 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:57,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:42:57,619 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:57,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2086259961, now seen corresponding path program 1 times [2020-10-29 07:42:57,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:57,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999066092] [2020-10-29 07:42:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-29 07:43:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2380 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-29 07:43:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:00,630 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:00,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:00,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:00,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:00,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:43:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:43:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:43:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:01,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:43:01,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:43:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:01,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:43:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:43:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 254 proven. 71 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 07:43:02,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999066092] [2020-10-29 07:43:02,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:02,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:43:02,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248281171] [2020-10-29 07:43:02,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:43:02,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:02,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:43:02,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:43:02,542 INFO L87 Difference]: Start difference. First operand 17438 states and 20062 transitions. Second operand 10 states. [2020-10-29 07:43:06,737 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 07:43:08,219 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-29 07:43:08,641 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67