/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/Problem12_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:06:44,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:06:44,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:06:44,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:06:44,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:06:44,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:06:44,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:06:44,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:06:44,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:06:44,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:06:44,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:06:44,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:06:44,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:06:44,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:06:44,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:06:44,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:06:44,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:06:44,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:06:44,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:06:44,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:06:44,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:06:44,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:06:44,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:06:44,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:06:44,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:06:44,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:06:44,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:06:44,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:06:44,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:06:44,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:06:44,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:06:44,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:06:44,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:06:44,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:06:44,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:06:44,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:06:44,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:06:44,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:06:44,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:06:44,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:06:44,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:06:44,870 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 07:06:44,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:06:44,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:06:44,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:06:44,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:06:44,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:06:44,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:06:44,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:06:44,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:06:44,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:06:44,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:06:44,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:06:44,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:06:44,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:06:44,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:06:44,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:06:44,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:06:44,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:06:44,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:06:44,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:06:44,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:06:44,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:06:44,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:06:44,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:06:44,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:06:44,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:06:44,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:06:44,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:06:44,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:06:44,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:06:44,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:06:45,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:06:45,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:06:45,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:06:45,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:06:45,451 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:06:45,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-29 07:06:45,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23058be30/b199931b5b724ac7808d73feefb26558/FLAG399dabe04 [2020-10-29 07:06:46,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:06:46,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-29 07:06:46,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23058be30/b199931b5b724ac7808d73feefb26558/FLAG399dabe04 [2020-10-29 07:06:47,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23058be30/b199931b5b724ac7808d73feefb26558 [2020-10-29 07:06:47,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:06:47,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:06:47,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:47,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:06:47,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:06:47,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:47" (1/1) ... [2020-10-29 07:06:47,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74421ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:47, skipping insertion in model container [2020-10-29 07:06:47,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:47" (1/1) ... [2020-10-29 07:06:47,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:06:47,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:06:48,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:48,831 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:06:49,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:49,698 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:06:49,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49 WrapperNode [2020-10-29 07:06:49,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:49,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:06:49,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:06:49,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:06:49,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:49,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:49,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:49,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:49,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:50,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:50,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (1/1) ... [2020-10-29 07:06:50,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:06:50,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:06:50,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:06:50,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:06:50,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (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 07:06:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:06:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:06:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:06:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:06:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:06:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:06:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:06:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:06:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:06:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:06:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:06:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:06:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:06:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:06:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:06:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:06:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:06:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:06:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:06:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:06:56,669 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:06:56,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:06:56,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:56 BoogieIcfgContainer [2020-10-29 07:06:56,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:06:56,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:06:56,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:06:56,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:06:56,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:06:47" (1/3) ... [2020-10-29 07:06:56,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0f2097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:56, skipping insertion in model container [2020-10-29 07:06:56,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:49" (2/3) ... [2020-10-29 07:06:56,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0f2097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:56, skipping insertion in model container [2020-10-29 07:06:56,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:56" (3/3) ... [2020-10-29 07:06:56,686 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label54.c [2020-10-29 07:06:56,704 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:06:56,713 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:06:56,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:06:56,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:06:56,801 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:06:56,801 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:06:56,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:06:56,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:06:56,801 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:06:56,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:06:56,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:06:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:06:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 07:06:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:56,885 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] [2020-10-29 07:06:56,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:56,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1036836092, now seen corresponding path program 1 times [2020-10-29 07:06:56,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:56,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995095811] [2020-10-29 07:06:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:57,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 07:06:57,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-29 07:06:57,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:57,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 07:06:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:06:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:58,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:06:58,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:58,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:58,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:58,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:06:58,310 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 07:06:58,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995095811] [2020-10-29 07:06:58,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:58,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:06:58,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538793249] [2020-10-29 07:06:58,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:06:58,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:58,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:06:58,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:06:58,355 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 07:07:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:17,290 INFO L93 Difference]: Finished difference Result 3290 states and 6312 transitions. [2020-10-29 07:07:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:07:17,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-29 07:07:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:17,355 INFO L225 Difference]: With dead ends: 3290 [2020-10-29 07:07:17,356 INFO L226 Difference]: Without dead ends: 2347 [2020-10-29 07:07:17,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-29 07:07:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-29 07:07:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-29 07:07:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3488 transitions. [2020-10-29 07:07:17,597 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3488 transitions. Word has length 40 [2020-10-29 07:07:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:17,598 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3488 transitions. [2020-10-29 07:07:17,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:07:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3488 transitions. [2020-10-29 07:07:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 07:07:17,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:17,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:17,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:07:17,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:17,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1647940978, now seen corresponding path program 1 times [2020-10-29 07:07:17,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:17,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642169250] [2020-10-29 07:07:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:07:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1581 [2020-10-29 07:07:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:07:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:07:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:19,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:07:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:19,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:19,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 07:07:19,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:19,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:19,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:19,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:07:19,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 07:07:19,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:19,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:07:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:19,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642169250] [2020-10-29 07:07:19,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:19,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:07:19,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215737028] [2020-10-29 07:07:19,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:19,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:19,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:19,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:19,949 INFO L87 Difference]: Start difference. First operand 2332 states and 3488 transitions. Second operand 7 states. [2020-10-29 07:07:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:38,880 INFO L93 Difference]: Finished difference Result 7127 states and 10725 transitions. [2020-10-29 07:07:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:07:38,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 07:07:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:38,924 INFO L225 Difference]: With dead ends: 7127 [2020-10-29 07:07:38,924 INFO L226 Difference]: Without dead ends: 4801 [2020-10-29 07:07:38,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-10-29 07:07:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4714. [2020-10-29 07:07:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4714 states. [2020-10-29 07:07:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 6523 transitions. [2020-10-29 07:07:39,156 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 6523 transitions. Word has length 119 [2020-10-29 07:07:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:39,159 INFO L481 AbstractCegarLoop]: Abstraction has 4714 states and 6523 transitions. [2020-10-29 07:07:39,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 6523 transitions. [2020-10-29 07:07:39,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 07:07:39,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:39,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:39,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:07:39,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1218272796, now seen corresponding path program 1 times [2020-10-29 07:07:39,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:39,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049780519] [2020-10-29 07:07:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:07:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1619 [2020-10-29 07:07:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:40,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:07:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:41,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:07:41,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:07:41,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 07:07:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:41,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:07:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049780519] [2020-10-29 07:07:41,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:41,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:07:41,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233755781] [2020-10-29 07:07:41,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:07:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:07:41,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:07:41,536 INFO L87 Difference]: Start difference. First operand 4714 states and 6523 transitions. Second operand 8 states. [2020-10-29 07:08:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:00,447 INFO L93 Difference]: Finished difference Result 14431 states and 20486 transitions. [2020-10-29 07:08:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:08:00,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2020-10-29 07:08:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:00,509 INFO L225 Difference]: With dead ends: 14431 [2020-10-29 07:08:00,509 INFO L226 Difference]: Without dead ends: 9723 [2020-10-29 07:08:00,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:08:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2020-10-29 07:08:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 9617. [2020-10-29 07:08:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9617 states. [2020-10-29 07:08:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9617 states to 9617 states and 13388 transitions. [2020-10-29 07:08:00,889 INFO L78 Accepts]: Start accepts. Automaton has 9617 states and 13388 transitions. Word has length 148 [2020-10-29 07:08:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:00,895 INFO L481 AbstractCegarLoop]: Abstraction has 9617 states and 13388 transitions. [2020-10-29 07:08:00,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:08:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9617 states and 13388 transitions. [2020-10-29 07:08:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 07:08:00,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:00,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:00,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:08:00,902 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:00,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1865245108, now seen corresponding path program 1 times [2020-10-29 07:08:00,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:00,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327687575] [2020-10-29 07:08:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 07:08:02,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-29 07:08:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:08:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:08:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:02,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:08:02,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:02,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:08:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 07:08:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:02,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:08:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:08:02,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327687575] [2020-10-29 07:08:02,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:08:02,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:08:02,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546970290] [2020-10-29 07:08:02,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:02,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:02,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:02,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:02,930 INFO L87 Difference]: Start difference. First operand 9617 states and 13388 transitions. Second operand 7 states. [2020-10-29 07:08:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:18,494 INFO L93 Difference]: Finished difference Result 27737 states and 40101 transitions. [2020-10-29 07:08:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:18,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-29 07:08:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:18,577 INFO L225 Difference]: With dead ends: 27737 [2020-10-29 07:08:18,578 INFO L226 Difference]: Without dead ends: 18126 [2020-10-29 07:08:18,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18126 states. [2020-10-29 07:08:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18126 to 17849. [2020-10-29 07:08:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17849 states. [2020-10-29 07:08:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17849 states to 17849 states and 23069 transitions. [2020-10-29 07:08:19,129 INFO L78 Accepts]: Start accepts. Automaton has 17849 states and 23069 transitions. Word has length 160 [2020-10-29 07:08:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:19,131 INFO L481 AbstractCegarLoop]: Abstraction has 17849 states and 23069 transitions. [2020-10-29 07:08:19,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17849 states and 23069 transitions. [2020-10-29 07:08:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 07:08:19,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:19,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:19,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:08:19,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash -713931602, now seen corresponding path program 1 times [2020-10-29 07:08:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219600453] [2020-10-29 07:08:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 07:08:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-29 07:08:20,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:20,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:08:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:08:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:20,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:20,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:08:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:20,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:08:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:08:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:20,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 07:08:20,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:20,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:08:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:08:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:08:20,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219600453] [2020-10-29 07:08:20,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:20,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:08:20,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128830109] [2020-10-29 07:08:20,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:08:20,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:20,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:08:20,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:08:20,947 INFO L87 Difference]: Start difference. First operand 17849 states and 23069 transitions. Second operand 6 states. [2020-10-29 07:08:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:42,335 INFO L93 Difference]: Finished difference Result 64818 states and 89585 transitions. [2020-10-29 07:08:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:08:42,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-10-29 07:08:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:42,557 INFO L225 Difference]: With dead ends: 64818 [2020-10-29 07:08:42,557 INFO L226 Difference]: Without dead ends: 47742 [2020-10-29 07:08:42,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:08:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47742 states. [2020-10-29 07:08:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47742 to 45385. [2020-10-29 07:08:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45385 states. [2020-10-29 07:08:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45385 states to 45385 states and 59845 transitions. [2020-10-29 07:08:44,097 INFO L78 Accepts]: Start accepts. Automaton has 45385 states and 59845 transitions. Word has length 185 [2020-10-29 07:08:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:44,098 INFO L481 AbstractCegarLoop]: Abstraction has 45385 states and 59845 transitions. [2020-10-29 07:08:44,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:08:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 45385 states and 59845 transitions. [2020-10-29 07:08:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 07:08:44,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:44,105 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:08:44,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:08:44,105 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:44,106 INFO L82 PathProgramCache]: Analyzing trace with hash 514899906, now seen corresponding path program 1 times [2020-10-29 07:08:44,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:44,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117297913] [2020-10-29 07:08:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:45,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:45,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:08:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:08:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:46,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:46,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:46,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:46,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:08:46,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:46,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:46,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:08:46,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:08:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:46,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:08:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:08:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:46,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:46,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:08:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:46,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 07:08:46,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:46,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:08:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:08:46,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117297913] [2020-10-29 07:08:46,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:46,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:08:46,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445684034] [2020-10-29 07:08:46,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:08:46,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:46,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:08:46,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:08:46,660 INFO L87 Difference]: Start difference. First operand 45385 states and 59845 transitions. Second operand 8 states. [2020-10-29 07:09:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:13,869 INFO L93 Difference]: Finished difference Result 111257 states and 158485 transitions. [2020-10-29 07:09:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:09:13,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-29 07:09:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:14,098 INFO L225 Difference]: With dead ends: 111257 [2020-10-29 07:09:14,098 INFO L226 Difference]: Without dead ends: 59459 [2020-10-29 07:09:14,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:09:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59459 states. [2020-10-29 07:09:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59459 to 57853. [2020-10-29 07:09:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57853 states. [2020-10-29 07:09:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57853 states to 57853 states and 75681 transitions. [2020-10-29 07:09:16,450 INFO L78 Accepts]: Start accepts. Automaton has 57853 states and 75681 transitions. Word has length 239 [2020-10-29 07:09:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:16,451 INFO L481 AbstractCegarLoop]: Abstraction has 57853 states and 75681 transitions. [2020-10-29 07:09:16,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:09:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 57853 states and 75681 transitions. [2020-10-29 07:09:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 07:09:16,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:16,458 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:09:16,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:09:16,459 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:16,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:16,459 INFO L82 PathProgramCache]: Analyzing trace with hash -518017728, now seen corresponding path program 1 times [2020-10-29 07:09:16,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:16,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170388605] [2020-10-29 07:09:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:18,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:18,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-29 07:09:18,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:18,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-29 07:09:18,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:18,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:09:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:09:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:19,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:19,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:19,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:09:19,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:19,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:19,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:19,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:09:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 07:09:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:19,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:09:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:09:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:19,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:09:19,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:09:19,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:19,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:09:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:09:19,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170388605] [2020-10-29 07:09:19,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:19,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:19,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761471245] [2020-10-29 07:09:19,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:19,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:19,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:19,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:19,835 INFO L87 Difference]: Start difference. First operand 57853 states and 75681 transitions. Second operand 7 states. [2020-10-29 07:09:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:43,212 INFO L93 Difference]: Finished difference Result 144258 states and 206465 transitions. [2020-10-29 07:09:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:09:43,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-29 07:09:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:44,065 INFO L225 Difference]: With dead ends: 144258 [2020-10-29 07:09:44,065 INFO L226 Difference]: Without dead ends: 86411 [2020-10-29 07:09:44,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86411 states. [2020-10-29 07:09:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86411 to 82749. [2020-10-29 07:09:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82749 states. [2020-10-29 07:09:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82749 states to 82749 states and 108548 transitions. [2020-10-29 07:09:47,290 INFO L78 Accepts]: Start accepts. Automaton has 82749 states and 108548 transitions. Word has length 304 [2020-10-29 07:09:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:47,291 INFO L481 AbstractCegarLoop]: Abstraction has 82749 states and 108548 transitions. [2020-10-29 07:09:47,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 82749 states and 108548 transitions. [2020-10-29 07:09:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 07:09:47,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:47,306 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:09:47,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:09:47,306 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash 665819712, now seen corresponding path program 1 times [2020-10-29 07:09:47,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:47,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881199942] [2020-10-29 07:09:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:49,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 07:09:52,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:09:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 07:09:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:52,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:09:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:09:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:52,854 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:09:52,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:52,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:52,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:09:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:52,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:52,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:09:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 07:09:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:53,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:53,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:09:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:09:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:53,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:53,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 07:09:53,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-29 07:09:53,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:53,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:09:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:09:54,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881199942] [2020-10-29 07:09:54,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:54,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:54,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343894615] [2020-10-29 07:09:54,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:54,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:54,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:54,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:54,051 INFO L87 Difference]: Start difference. First operand 82749 states and 108548 transitions. Second operand 7 states. [2020-10-29 07:09:55,647 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:10:09,046 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:10:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:10:18,172 INFO L93 Difference]: Finished difference Result 168902 states and 236261 transitions. [2020-10-29 07:10:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:10:18,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-29 07:10:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:10:18,696 INFO L225 Difference]: With dead ends: 168902 [2020-10-29 07:10:18,696 INFO L226 Difference]: Without dead ends: 86159 [2020-10-29 07:10:19,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:10:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86159 states. [2020-10-29 07:10:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86159 to 83732. [2020-10-29 07:10:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83732 states. [2020-10-29 07:10:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83732 states to 83732 states and 105877 transitions. [2020-10-29 07:10:22,054 INFO L78 Accepts]: Start accepts. Automaton has 83732 states and 105877 transitions. Word has length 358 [2020-10-29 07:10:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:10:22,058 INFO L481 AbstractCegarLoop]: Abstraction has 83732 states and 105877 transitions. [2020-10-29 07:10:22,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:10:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 83732 states and 105877 transitions. [2020-10-29 07:10:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-29 07:10:22,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:22,071 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:10:22,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:10:22,071 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1038235608, now seen corresponding path program 1 times [2020-10-29 07:10:22,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:22,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555657224] [2020-10-29 07:10:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:22,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking...