/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/Problem17_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:10:36,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:10:36,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:10:36,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:10:36,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:10:36,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:10:36,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:10:36,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:10:36,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:10:36,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:10:36,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:10:36,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:10:36,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:10:36,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:10:36,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:10:36,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:10:36,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:10:36,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:10:36,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:10:36,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:10:36,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:10:36,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:10:36,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:10:36,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:10:36,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:10:36,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:10:36,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:10:36,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:10:36,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:10:36,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:10:36,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:10:36,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:10:36,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:10:36,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:10:36,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:10:36,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:10:36,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:10:36,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:10:36,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:10:36,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:10:36,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:10:36,855 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 08:10:36,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:10:36,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:10:36,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:10:36,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:10:36,934 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:10:36,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:10:36,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:10:36,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:10:36,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:10:36,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:10:36,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:10:36,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:10:36,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:10:36,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:10:36,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:10:36,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:10:36,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:10:36,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:10:36,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:10:36,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:10:36,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:10:36,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:10:36,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:10:36,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:10:36,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:10:36,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:10:36,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:10:36,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:10:36,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:10:36,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:10:37,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:10:37,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:10:37,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:10:37,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:10:37,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:10:37,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-29 08:10:37,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ac21e9f3/de20ead07eb445e7a386d3ffd9de9e57/FLAG72f185c37 [2020-10-29 08:10:38,497 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:10:38,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-29 08:10:38,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ac21e9f3/de20ead07eb445e7a386d3ffd9de9e57/FLAG72f185c37 [2020-10-29 08:10:39,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ac21e9f3/de20ead07eb445e7a386d3ffd9de9e57 [2020-10-29 08:10:39,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:10:39,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:10:39,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:10:39,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:10:39,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:10:39,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:10:39" (1/1) ... [2020-10-29 08:10:39,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:39, skipping insertion in model container [2020-10-29 08:10:39,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:10:39" (1/1) ... [2020-10-29 08:10:39,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:10:39,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:10:40,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:10:40,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:10:40,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:10:40,768 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:10:40,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40 WrapperNode [2020-10-29 08:10:40,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:10:40,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:10:40,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:10:40,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:10:40,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:40,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:40,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:40,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:40,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:41,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:41,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... [2020-10-29 08:10:41,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:10:41,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:10:41,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:10:41,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:10:41,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:10:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:10:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:10:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:10:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:10:41,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:10:41,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:10:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:10:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:10:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:10:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:10:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:10:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:10:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:10:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:10:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:10:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:10:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:10:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:10:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:10:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:10:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:10:50,707 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:10:50,710 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:10:50,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:10:50 BoogieIcfgContainer [2020-10-29 08:10:50,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:10:50,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:10:50,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:10:50,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:10:50,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:10:39" (1/3) ... [2020-10-29 08:10:50,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a18dfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:10:50, skipping insertion in model container [2020-10-29 08:10:50,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:10:40" (2/3) ... [2020-10-29 08:10:50,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a18dfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:10:50, skipping insertion in model container [2020-10-29 08:10:50,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:10:50" (3/3) ... [2020-10-29 08:10:50,735 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2020-10-29 08:10:50,748 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:10:50,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:10:50,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:10:50,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:10:50,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:10:50,812 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:10:50,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:10:50,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:10:50,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:10:50,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:10:50,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:10:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:10:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 08:10:50,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:10:50,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:10:50,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:10:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:10:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -33809726, now seen corresponding path program 1 times [2020-10-29 08:10:50,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:10:50,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679646629] [2020-10-29 08:10:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:10:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:51,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 08:10:51,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-29 08:10:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:10:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:10:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 08:10:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:10:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:52,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:52,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:10:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:10:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:10:52,050 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 08:10:52,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679646629] [2020-10-29 08:10:52,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:10:52,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:10:52,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92627638] [2020-10-29 08:10:52,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:10:52,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:10:52,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:10:52,079 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:11:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:06,352 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:11:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:11:06,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-29 08:11:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:06,379 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:11:06,380 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:11:06,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:11:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:11:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:11:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:11:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:11:06,549 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 56 [2020-10-29 08:11:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:06,550 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:11:06,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:11:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:11:06,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 08:11:06,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:06,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:11:06,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:11:06,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash 317812258, now seen corresponding path program 1 times [2020-10-29 08:11:06,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:06,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91221574] [2020-10-29 08:11:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:07,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:07,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 08:11:07,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-29 08:11:07,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:07,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:11:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:11:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:11:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:08,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:08,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:08,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 08:11:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:08,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:11:08,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:11:08,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91221574] [2020-10-29 08:11:08,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:08,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:11:08,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485736372] [2020-10-29 08:11:08,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:11:08,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:08,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:11:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:11:08,415 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 6 states. [2020-10-29 08:11:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:22,945 INFO L93 Difference]: Finished difference Result 2940 states and 4547 transitions. [2020-10-29 08:11:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:11:22,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-10-29 08:11:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:22,958 INFO L225 Difference]: With dead ends: 2940 [2020-10-29 08:11:22,959 INFO L226 Difference]: Without dead ends: 1943 [2020-10-29 08:11:22,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:11:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-10-29 08:11:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1931. [2020-10-29 08:11:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2020-10-29 08:11:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2595 transitions. [2020-10-29 08:11:23,029 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2595 transitions. Word has length 127 [2020-10-29 08:11:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:23,030 INFO L481 AbstractCegarLoop]: Abstraction has 1931 states and 2595 transitions. [2020-10-29 08:11:23,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:11:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2595 transitions. [2020-10-29 08:11:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 08:11:23,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:23,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:23,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:11:23,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash -670028817, now seen corresponding path program 1 times [2020-10-29 08:11:23,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:23,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639644992] [2020-10-29 08:11:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 08:11:24,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:11:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:24,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:11:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:11:24,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 08:11:24,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:11:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:11:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:25,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639644992] [2020-10-29 08:11:25,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:25,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:25,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166395243] [2020-10-29 08:11:25,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:11:25,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:25,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:11:25,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:11:25,252 INFO L87 Difference]: Start difference. First operand 1931 states and 2595 transitions. Second operand 8 states. [2020-10-29 08:11:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:49,204 INFO L93 Difference]: Finished difference Result 4870 states and 6738 transitions. [2020-10-29 08:11:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:11:49,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-29 08:11:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:49,226 INFO L225 Difference]: With dead ends: 4870 [2020-10-29 08:11:49,226 INFO L226 Difference]: Without dead ends: 2887 [2020-10-29 08:11:49,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:11:49,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-10-29 08:11:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2838. [2020-10-29 08:11:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2020-10-29 08:11:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3830 transitions. [2020-10-29 08:11:49,343 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3830 transitions. Word has length 130 [2020-10-29 08:11:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:49,345 INFO L481 AbstractCegarLoop]: Abstraction has 2838 states and 3830 transitions. [2020-10-29 08:11:49,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:11:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3830 transitions. [2020-10-29 08:11:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 08:11:49,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:49,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:11:49,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:11:49,353 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1307701374, now seen corresponding path program 1 times [2020-10-29 08:11:49,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:49,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958074082] [2020-10-29 08:11:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:49,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:49,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 08:11:49,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 08:11:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:49,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:49,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:11:49,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:49,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:50,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:50,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:11:50,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:11:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:50,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958074082] [2020-10-29 08:11:50,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:50,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:11:50,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910555187] [2020-10-29 08:11:50,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:11:50,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:50,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:11:50,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:11:50,174 INFO L87 Difference]: Start difference. First operand 2838 states and 3830 transitions. Second operand 5 states. [2020-10-29 08:12:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:06,037 INFO L93 Difference]: Finished difference Result 7479 states and 10519 transitions. [2020-10-29 08:12:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:06,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-29 08:12:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:06,071 INFO L225 Difference]: With dead ends: 7479 [2020-10-29 08:12:06,071 INFO L226 Difference]: Without dead ends: 5080 [2020-10-29 08:12:06,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:12:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2020-10-29 08:12:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 5074. [2020-10-29 08:12:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5074 states. [2020-10-29 08:12:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6695 transitions. [2020-10-29 08:12:06,257 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6695 transitions. Word has length 143 [2020-10-29 08:12:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:06,259 INFO L481 AbstractCegarLoop]: Abstraction has 5074 states and 6695 transitions. [2020-10-29 08:12:06,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:12:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6695 transitions. [2020-10-29 08:12:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 08:12:06,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:06,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:06,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:12:06,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash 420174490, now seen corresponding path program 1 times [2020-10-29 08:12:06,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:06,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513894144] [2020-10-29 08:12:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:10,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:10,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 08:12:10,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4255 [2020-10-29 08:12:10,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:10,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:12:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:12:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:10,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:10,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:10,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:10,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:10,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:12:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:11,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:12:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:12:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:11,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:12:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 08:12:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:11,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:12:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:12:11,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513894144] [2020-10-29 08:12:11,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:11,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:12:11,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263069404] [2020-10-29 08:12:11,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:12:11,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:11,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:12:11,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:12:11,587 INFO L87 Difference]: Start difference. First operand 5074 states and 6695 transitions. Second operand 10 states. [2020-10-29 08:12:11,827 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:12:17,250 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:12:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:35,163 INFO L93 Difference]: Finished difference Result 12583 states and 17773 transitions. [2020-10-29 08:12:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:12:35,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 218 [2020-10-29 08:12:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:35,214 INFO L225 Difference]: With dead ends: 12583 [2020-10-29 08:12:35,214 INFO L226 Difference]: Without dead ends: 7948 [2020-10-29 08:12:35,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:12:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2020-10-29 08:12:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7867. [2020-10-29 08:12:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7867 states. [2020-10-29 08:12:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 10103 transitions. [2020-10-29 08:12:35,527 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 10103 transitions. Word has length 218 [2020-10-29 08:12:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:35,528 INFO L481 AbstractCegarLoop]: Abstraction has 7867 states and 10103 transitions. [2020-10-29 08:12:35,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:12:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 10103 transitions. [2020-10-29 08:12:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 08:12:35,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:35,536 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:12:35,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:12:35,536 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:35,537 INFO L82 PathProgramCache]: Analyzing trace with hash 211026128, now seen corresponding path program 1 times [2020-10-29 08:12:35,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:35,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315246504] [2020-10-29 08:12:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:40,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:40,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 08:12:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 08:12:40,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:40,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:12:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:12:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 08:12:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:40,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:40,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:12:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:40,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:40,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:40,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:40,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 08:12:40,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:40,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:40,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:12:40,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:41,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:12:41,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 08:12:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:41,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:12:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:12:41,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315246504] [2020-10-29 08:12:41,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:41,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:12:41,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070308328] [2020-10-29 08:12:41,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:12:41,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:41,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:12:41,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:12:41,390 INFO L87 Difference]: Start difference. First operand 7867 states and 10103 transitions. Second operand 6 states. [2020-10-29 08:12:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:59,250 INFO L93 Difference]: Finished difference Result 17939 states and 23856 transitions. [2020-10-29 08:12:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:59,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2020-10-29 08:12:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:59,313 INFO L225 Difference]: With dead ends: 17939 [2020-10-29 08:12:59,314 INFO L226 Difference]: Without dead ends: 10528 [2020-10-29 08:12:59,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:12:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2020-10-29 08:12:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 10520. [2020-10-29 08:12:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10520 states. [2020-10-29 08:12:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10520 states to 10520 states and 14137 transitions. [2020-10-29 08:12:59,701 INFO L78 Accepts]: Start accepts. Automaton has 10520 states and 14137 transitions. Word has length 229 [2020-10-29 08:12:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:59,702 INFO L481 AbstractCegarLoop]: Abstraction has 10520 states and 14137 transitions. [2020-10-29 08:12:59,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:12:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10520 states and 14137 transitions. [2020-10-29 08:12:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 08:12:59,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:59,708 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:59,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:12:59,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:59,710 INFO L82 PathProgramCache]: Analyzing trace with hash -480193547, now seen corresponding path program 1 times [2020-10-29 08:12:59,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:59,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539404853] [2020-10-29 08:12:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:13:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4664 [2020-10-29 08:13:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 08:13:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 08:13:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:04,659 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:13:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:04,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:13:04,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:13:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:13:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:04,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 08:13:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 08:13:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:05,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:13:05,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 08:13:05,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:05,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:13:05,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:13:05,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539404853] [2020-10-29 08:13:05,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:05,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:13:05,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982921196] [2020-10-29 08:13:05,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:13:05,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:05,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:13:05,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:13:05,294 INFO L87 Difference]: Start difference. First operand 10520 states and 14137 transitions. Second operand 6 states. [2020-10-29 08:13:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:26,811 INFO L93 Difference]: Finished difference Result 24188 states and 34280 transitions. [2020-10-29 08:13:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:13:26,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-29 08:13:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:26,875 INFO L225 Difference]: With dead ends: 24188 [2020-10-29 08:13:26,875 INFO L226 Difference]: Without dead ends: 14124 [2020-10-29 08:13:26,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:13:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2020-10-29 08:13:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 14104. [2020-10-29 08:13:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14104 states. [2020-10-29 08:13:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14104 states to 14104 states and 19897 transitions. [2020-10-29 08:13:27,512 INFO L78 Accepts]: Start accepts. Automaton has 14104 states and 19897 transitions. Word has length 236 [2020-10-29 08:13:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:27,513 INFO L481 AbstractCegarLoop]: Abstraction has 14104 states and 19897 transitions. [2020-10-29 08:13:27,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:13:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14104 states and 19897 transitions. [2020-10-29 08:13:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 08:13:27,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:27,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:27,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:13:27,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1080547800, now seen corresponding path program 1 times [2020-10-29 08:13:27,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:27,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632156239] [2020-10-29 08:13:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:30,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:30,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 08:13:30,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-29 08:13:30,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:30,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:13:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:30,762 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:13:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:13:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:30,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:31,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:13:31,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 08:13:31,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:31,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:31,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:13:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:13:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 08:13:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:31,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:13:31,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:31,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:13:31,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:31,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 08:13:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:31,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 96 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:13:31,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632156239] [2020-10-29 08:13:31,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:31,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:13:31,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151039861] [2020-10-29 08:13:31,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:31,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:31,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:31,663 INFO L87 Difference]: Start difference. First operand 14104 states and 19897 transitions. Second operand 7 states. [2020-10-29 08:13:31,852 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 08:13:38,831 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:13:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:58,113 INFO L93 Difference]: Finished difference Result 28242 states and 42690 transitions. [2020-10-29 08:13:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:13:58,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-29 08:13:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:58,205 INFO L225 Difference]: With dead ends: 28242 [2020-10-29 08:13:58,205 INFO L226 Difference]: Without dead ends: 14581 [2020-10-29 08:13:58,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:13:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14581 states. [2020-10-29 08:13:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14581 to 14338. [2020-10-29 08:13:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14338 states. [2020-10-29 08:13:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14338 states to 14338 states and 20628 transitions. [2020-10-29 08:13:58,917 INFO L78 Accepts]: Start accepts. Automaton has 14338 states and 20628 transitions. Word has length 241 [2020-10-29 08:13:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:58,918 INFO L481 AbstractCegarLoop]: Abstraction has 14338 states and 20628 transitions. [2020-10-29 08:13:58,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:13:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14338 states and 20628 transitions. [2020-10-29 08:13:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 08:13:58,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:58,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:58,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:13:58,925 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:58,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:58,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1981981249, now seen corresponding path program 1 times [2020-10-29 08:13:58,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:58,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034380249] [2020-10-29 08:13:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:02,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:03,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:03,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-29 08:14:03,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:14:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 08:14:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:04,106 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:14:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:04,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:04,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:04,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:14:04,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:04,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:04,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:04,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:14:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:14:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 08:14:04,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:04,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:14:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:14:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:05,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:05,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:14:05,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:05,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:14:05,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:05,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:05,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:14:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:14:05,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034380249] [2020-10-29 08:14:05,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:05,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:14:05,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52082654] [2020-10-29 08:14:05,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:14:05,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:05,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:14:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:14:05,372 INFO L87 Difference]: Start difference. First operand 14338 states and 20628 transitions. Second operand 8 states. [2020-10-29 08:14:05,602 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:14:11,978 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66