/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:37:23,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:37:23,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:37:23,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:37:23,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:37:23,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:37:23,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:37:23,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:37:23,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:37:23,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:37:23,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:37:23,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:37:23,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:37:23,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:37:23,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:37:23,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:37:23,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:37:23,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:37:23,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:37:23,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:37:23,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:37:23,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:37:23,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:37:23,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:37:23,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:37:23,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:37:23,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:37:23,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:37:23,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:37:23,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:37:23,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:37:23,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:37:23,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:37:23,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:37:23,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:37:23,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:37:23,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:37:23,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:37:23,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:37:23,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:37:23,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:37:23,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:37:23,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:37:23,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:37:23,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:37:23,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:37:23,840 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:37:23,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:37:23,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:37:23,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:37:23,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:37:23,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:37:23,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:37:23,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:37:23,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:37:23,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:37:23,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:37:23,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:37:23,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:37:23,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:37:23,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:37:23,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:37:23,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:37:23,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:37:23,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:37:23,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:37:23,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:37:23,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:37:23,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:37:23,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:37:23,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:37:23,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:37:24,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:37:24,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:37:24,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:37:24,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:37:24,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:37:24,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-28 12:37:24,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8387551d/6a846f390f3a4d3eab9c1130b01a8c84/FLAGcb1bdaeda [2020-10-28 12:37:25,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:37:25,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-28 12:37:25,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8387551d/6a846f390f3a4d3eab9c1130b01a8c84/FLAGcb1bdaeda [2020-10-28 12:37:25,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8387551d/6a846f390f3a4d3eab9c1130b01a8c84 [2020-10-28 12:37:25,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:37:25,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:37:25,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:25,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:37:25,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:37:25,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:25" (1/1) ... [2020-10-28 12:37:25,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0f579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:25, skipping insertion in model container [2020-10-28 12:37:25,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:37:25" (1/1) ... [2020-10-28 12:37:25,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:37:25,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:37:27,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:27,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:37:28,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:37:28,740 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:37:28,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28 WrapperNode [2020-10-28 12:37:28,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:37:28,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:37:28,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:37:28,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:37:28,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:28,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:28,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:28,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:29,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:29,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:29,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... [2020-10-28 12:37:29,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:37:29,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:37:29,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:37:29,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:37:29,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:37:29,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:37:29,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:37:29,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:37:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:37:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:37:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:37:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:37:29,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:37:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:37:29,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:37:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:37:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:37:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:37:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:37:29,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:37:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:37:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:37:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:37:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:37:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:37:39,255 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:37:39,255 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:37:39,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:39 BoogieIcfgContainer [2020-10-28 12:37:39,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:37:39,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:37:39,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:37:39,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:37:39,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:37:25" (1/3) ... [2020-10-28 12:37:39,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7907260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:39, skipping insertion in model container [2020-10-28 12:37:39,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:37:28" (2/3) ... [2020-10-28 12:37:39,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7907260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:37:39, skipping insertion in model container [2020-10-28 12:37:39,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:37:39" (3/3) ... [2020-10-28 12:37:39,272 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2020-10-28 12:37:39,290 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:37:39,297 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:37:39,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:37:39,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:37:39,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:37:39,363 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:37:39,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:37:39,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:37:39,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:37:39,363 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:37:39,363 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:37:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:37:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 12:37:39,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:39,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:39,425 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash 688373194, now seen corresponding path program 1 times [2020-10-28 12:37:39,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:39,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999742928] [2020-10-28 12:37:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 12:37:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-28 12:37:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:37:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:37:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 12:37:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:37:40,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:37:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:40,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:37:40,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:37:40,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:37:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:37:40,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:37:40,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:37:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:37:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:37:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:37:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:37:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:37:40,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999742928] [2020-10-28 12:37:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:37:40,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:37:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463532381] [2020-10-28 12:37:40,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:37:40,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:37:40,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:37:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:37:40,419 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:37:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:37:58,371 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-28 12:37:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:37:58,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 12:37:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:37:58,410 INFO L225 Difference]: With dead ends: 3112 [2020-10-28 12:37:58,411 INFO L226 Difference]: Without dead ends: 1904 [2020-10-28 12:37:58,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:37:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-28 12:37:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-28 12:37:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-28 12:37:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-28 12:37:58,632 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 42 [2020-10-28 12:37:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:37:58,633 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-28 12:37:58,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:37:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-28 12:37:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 12:37:58,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:37:58,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:37:58,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:37:58,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:37:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:37:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash 592186030, now seen corresponding path program 1 times [2020-10-28 12:37:58,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:37:58,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123344961] [2020-10-28 12:37:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:37:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:37:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:37:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:00,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:00,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 12:38:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:38:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2091 [2020-10-28 12:38:00,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:38:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:38:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:38:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:00,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:38:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:38:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:01,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:38:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:38:01,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123344961] [2020-10-28 12:38:01,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:38:01,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:38:01,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262608122] [2020-10-28 12:38:01,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:38:01,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:01,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:38:01,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:38:01,258 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 8 states. [2020-10-28 12:38:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:26,627 INFO L93 Difference]: Finished difference Result 7283 states and 11245 transitions. [2020-10-28 12:38:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:38:26,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-28 12:38:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:26,662 INFO L225 Difference]: With dead ends: 7283 [2020-10-28 12:38:26,663 INFO L226 Difference]: Without dead ends: 5405 [2020-10-28 12:38:26,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:38:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-10-28 12:38:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5324. [2020-10-28 12:38:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5324 states. [2020-10-28 12:38:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 7401 transitions. [2020-10-28 12:38:26,850 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 7401 transitions. Word has length 111 [2020-10-28 12:38:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:26,851 INFO L481 AbstractCegarLoop]: Abstraction has 5324 states and 7401 transitions. [2020-10-28 12:38:26,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:38:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 7401 transitions. [2020-10-28 12:38:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 12:38:26,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:26,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:38:26,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:38:26,854 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1349073886, now seen corresponding path program 1 times [2020-10-28 12:38:26,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758090669] [2020-10-28 12:38:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:28,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:38:28,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:38:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-28 12:38:28,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:38:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:38:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:28,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:38:28,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:28,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:38:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:28,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:28,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:38:28,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 12:38:28,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:28,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:38:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:38:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:38:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:38:28,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758090669] [2020-10-28 12:38:28,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:38:28,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:38:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649801337] [2020-10-28 12:38:28,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:38:28,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:38:28,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:38:28,675 INFO L87 Difference]: Start difference. First operand 5324 states and 7401 transitions. Second operand 7 states. [2020-10-28 12:38:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:38:48,803 INFO L93 Difference]: Finished difference Result 15133 states and 21576 transitions. [2020-10-28 12:38:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:38:48,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 12:38:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:38:48,864 INFO L225 Difference]: With dead ends: 15133 [2020-10-28 12:38:48,864 INFO L226 Difference]: Without dead ends: 9815 [2020-10-28 12:38:48,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:38:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2020-10-28 12:38:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 9613. [2020-10-28 12:38:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9613 states. [2020-10-28 12:38:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9613 states to 9613 states and 12384 transitions. [2020-10-28 12:38:49,182 INFO L78 Accepts]: Start accepts. Automaton has 9613 states and 12384 transitions. Word has length 119 [2020-10-28 12:38:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:38:49,185 INFO L481 AbstractCegarLoop]: Abstraction has 9613 states and 12384 transitions. [2020-10-28 12:38:49,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:38:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 9613 states and 12384 transitions. [2020-10-28 12:38:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 12:38:49,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:38:49,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:38:49,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:38:49,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:38:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:38:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1517726678, now seen corresponding path program 1 times [2020-10-28 12:38:49,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:38:49,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041926539] [2020-10-28 12:38:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:38:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:38:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:38:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:38:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:38:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:38:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:54,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:54,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:38:54,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:38:54,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:54,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:38:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:38:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:38:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:38:54,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:38:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:38:54,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:54,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:38:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:38:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:38:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:38:54,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:38:54,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:38:54,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:38:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:38:54,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:38:54,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:38:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:38:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:38:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:38:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:38:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 12:38:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041926539] [2020-10-28 12:38:55,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:38:55,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:38:55,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838451756] [2020-10-28 12:38:55,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:38:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:38:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:38:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:38:55,015 INFO L87 Difference]: Start difference. First operand 9613 states and 12384 transitions. Second operand 5 states. [2020-10-28 12:39:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:16,020 INFO L93 Difference]: Finished difference Result 23452 states and 31585 transitions. [2020-10-28 12:39:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:39:16,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-28 12:39:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:16,105 INFO L225 Difference]: With dead ends: 23452 [2020-10-28 12:39:16,106 INFO L226 Difference]: Without dead ends: 14648 [2020-10-28 12:39:16,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:39:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14648 states. [2020-10-28 12:39:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14648 to 14605. [2020-10-28 12:39:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14605 states. [2020-10-28 12:39:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14605 states to 14605 states and 19168 transitions. [2020-10-28 12:39:16,613 INFO L78 Accepts]: Start accepts. Automaton has 14605 states and 19168 transitions. Word has length 212 [2020-10-28 12:39:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:16,616 INFO L481 AbstractCegarLoop]: Abstraction has 14605 states and 19168 transitions. [2020-10-28 12:39:16,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:39:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14605 states and 19168 transitions. [2020-10-28 12:39:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 12:39:16,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:16,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:39:16,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:39:16,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:16,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash -479713266, now seen corresponding path program 1 times [2020-10-28 12:39:16,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:16,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940541161] [2020-10-28 12:39:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:21,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:39:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:39:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:39:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:39:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:21,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:21,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:22,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:22,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:39:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:39:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:39:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:39:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:22,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:39:22,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 12:39:22,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:39:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:39:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:39:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:39:22,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940541161] [2020-10-28 12:39:22,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:22,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:39:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448821171] [2020-10-28 12:39:22,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:39:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:39:22,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:39:22,477 INFO L87 Difference]: Start difference. First operand 14605 states and 19168 transitions. Second operand 7 states. [2020-10-28 12:39:22,652 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:39:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:39:50,185 INFO L93 Difference]: Finished difference Result 40566 states and 56105 transitions. [2020-10-28 12:39:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:39:50,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-28 12:39:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:39:50,294 INFO L225 Difference]: With dead ends: 40566 [2020-10-28 12:39:50,294 INFO L226 Difference]: Without dead ends: 26770 [2020-10-28 12:39:50,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:39:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26770 states. [2020-10-28 12:39:50,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26770 to 26612. [2020-10-28 12:39:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26612 states. [2020-10-28 12:39:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26612 states to 26612 states and 36887 transitions. [2020-10-28 12:39:51,036 INFO L78 Accepts]: Start accepts. Automaton has 26612 states and 36887 transitions. Word has length 242 [2020-10-28 12:39:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:39:51,036 INFO L481 AbstractCegarLoop]: Abstraction has 26612 states and 36887 transitions. [2020-10-28 12:39:51,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:39:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26612 states and 36887 transitions. [2020-10-28 12:39:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 12:39:51,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:39:51,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:39:51,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:39:51,042 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:39:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:39:51,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1137272278, now seen corresponding path program 1 times [2020-10-28 12:39:51,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:39:51,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051651533] [2020-10-28 12:39:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:39:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 12:39:55,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:39:55,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4151 [2020-10-28 12:39:55,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:39:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:39:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:39:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:55,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:39:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:39:55,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:55,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:39:55,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:39:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:39:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:55,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:39:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:39:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:39:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 12:39:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:39:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:39:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:39:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:39:55,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:39:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:39:55,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:39:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 12:39:55,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:39:55,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:39:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:39:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:39:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:39:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:39:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 12:39:55,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051651533] [2020-10-28 12:39:55,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:39:55,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:39:55,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806754352] [2020-10-28 12:39:55,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:39:55,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:39:55,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:39:55,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:39:55,969 INFO L87 Difference]: Start difference. First operand 26612 states and 36887 transitions. Second operand 5 states. [2020-10-28 12:40:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:15,163 INFO L93 Difference]: Finished difference Result 44829 states and 62819 transitions. [2020-10-28 12:40:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:40:15,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-28 12:40:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:15,227 INFO L225 Difference]: With dead ends: 44829 [2020-10-28 12:40:15,227 INFO L226 Difference]: Without dead ends: 19026 [2020-10-28 12:40:15,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:40:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19026 states. [2020-10-28 12:40:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19026 to 19011. [2020-10-28 12:40:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19011 states. [2020-10-28 12:40:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19011 states to 19011 states and 24151 transitions. [2020-10-28 12:40:15,735 INFO L78 Accepts]: Start accepts. Automaton has 19011 states and 24151 transitions. Word has length 247 [2020-10-28 12:40:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:15,736 INFO L481 AbstractCegarLoop]: Abstraction has 19011 states and 24151 transitions. [2020-10-28 12:40:15,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:40:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 19011 states and 24151 transitions. [2020-10-28 12:40:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 12:40:15,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:15,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:40:15,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:40:15,742 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1177669344, now seen corresponding path program 1 times [2020-10-28 12:40:15,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:15,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011809114] [2020-10-28 12:40:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 12:40:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:40:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-28 12:40:18,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:18,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:40:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:40:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:18,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:18,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:40:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:18,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:40:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:40:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:40:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:18,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:40:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:18,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 12:40:18,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:18,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:40:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:40:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:18,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:18,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:40:18,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:40:18,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:18,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:40:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:40:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:40:18,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011809114] [2020-10-28 12:40:18,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:40:18,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:40:18,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424672517] [2020-10-28 12:40:18,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:18,979 INFO L87 Difference]: Start difference. First operand 19011 states and 24151 transitions. Second operand 7 states. [2020-10-28 12:40:19,138 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:44,730 INFO L93 Difference]: Finished difference Result 50549 states and 69199 transitions. [2020-10-28 12:40:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:40:44,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-28 12:40:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:44,827 INFO L225 Difference]: With dead ends: 50549 [2020-10-28 12:40:44,827 INFO L226 Difference]: Without dead ends: 31539 [2020-10-28 12:40:44,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:40:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2020-10-28 12:40:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 31308. [2020-10-28 12:40:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31308 states. [2020-10-28 12:40:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31308 states to 31308 states and 39979 transitions. [2020-10-28 12:40:45,530 INFO L78 Accepts]: Start accepts. Automaton has 31308 states and 39979 transitions. Word has length 261 [2020-10-28 12:40:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:45,531 INFO L481 AbstractCegarLoop]: Abstraction has 31308 states and 39979 transitions. [2020-10-28 12:40:45,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:40:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 31308 states and 39979 transitions. [2020-10-28 12:40:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 12:40:45,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:45,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:40:45,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:40:45,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1001986936, now seen corresponding path program 1 times [2020-10-28 12:40:45,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:45,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636770567] [2020-10-28 12:40:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:40:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 12:40:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:50,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:40:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:50,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:40:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:40:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:50,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:50,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:50,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:40:50,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:50,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:40:50,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:50,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:40:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:40:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:40:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:51,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:51,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:40:51,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:40:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 12:40:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:51,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:40:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:40:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:40:51,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636770567] [2020-10-28 12:40:51,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:40:51,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:40:51,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449252073] [2020-10-28 12:40:51,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:51,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:51,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:51,453 INFO L87 Difference]: Start difference. First operand 31308 states and 39979 transitions. Second operand 7 states.