/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:15:07,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:15:07,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:15:07,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:15:07,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:15:07,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:15:07,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:15:07,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:15:07,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:15:07,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:15:07,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:15:07,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:15:07,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:15:07,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:15:07,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:15:07,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:15:07,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:15:07,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:15:07,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:15:07,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:15:07,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:15:07,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:15:07,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:15:07,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:15:07,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:15:07,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:15:07,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:15:07,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:15:07,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:15:07,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:15:07,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:15:07,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:15:07,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:15:07,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:15:07,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:15:07,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:15:07,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:15:07,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:15:07,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:15:07,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:15:07,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:15:07,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:15:07,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:15:07,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:15:07,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:15:07,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:15:07,798 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:15:07,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:15:07,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:15:07,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:15:07,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:15:07,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:15:07,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:15:07,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:15:07,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:15:07,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:15:07,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:15:07,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:15:07,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:15:07,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:15:07,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:15:07,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:15:07,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:15:07,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:15:07,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:15:07,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:15:07,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:15:07,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:15:07,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:15:07,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:15:07,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:15:07,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:15:08,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:15:08,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:15:08,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:15:08,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:15:08,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:15:08,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2020-10-28 14:15:08,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8a4f556f/3f832670c608451798b0508d80c8b3a6/FLAGbca8c0b48 [2020-10-28 14:15:09,909 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:15:09,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2020-10-28 14:15:09,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8a4f556f/3f832670c608451798b0508d80c8b3a6/FLAGbca8c0b48 [2020-10-28 14:15:10,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8a4f556f/3f832670c608451798b0508d80c8b3a6 [2020-10-28 14:15:10,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:15:10,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:15:10,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:15:10,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:15:10,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:15:10,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:15:10" (1/1) ... [2020-10-28 14:15:10,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:10, skipping insertion in model container [2020-10-28 14:15:10,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:15:10" (1/1) ... [2020-10-28 14:15:10,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:15:10,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:15:12,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:15:12,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:15:14,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:15:14,190 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:15:14,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14 WrapperNode [2020-10-28 14:15:14,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:15:14,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:15:14,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:15:14,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:15:14,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... [2020-10-28 14:15:14,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:15:14,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:15:14,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:15:14,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:15:14,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:15:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:15:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:15:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:15:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:15:15,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:15:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:15:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:15:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:15:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:15:15,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:15:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:15:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:15:15,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:15:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:15:15,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:15:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:15:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:15:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:15:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:15:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:15:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:15:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:15:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:15:32,913 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:15:32,914 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:15:32,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:15:32 BoogieIcfgContainer [2020-10-28 14:15:32,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:15:32,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:15:32,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:15:32,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:15:32,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:15:10" (1/3) ... [2020-10-28 14:15:32,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28533b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:15:32, skipping insertion in model container [2020-10-28 14:15:32,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:15:14" (2/3) ... [2020-10-28 14:15:32,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28533b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:15:32, skipping insertion in model container [2020-10-28 14:15:32,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:15:32" (3/3) ... [2020-10-28 14:15:32,931 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label47.c [2020-10-28 14:15:32,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:15:32,954 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:15:32,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:15:33,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:15:33,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:15:33,028 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:15:33,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:15:33,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:15:33,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:15:33,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:15:33,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:15:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:15:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:15:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:15:33,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:15:33,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:15:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:15:33,134 INFO L82 PathProgramCache]: Analyzing trace with hash -425370282, now seen corresponding path program 1 times [2020-10-28 14:15:33,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:15:33,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634144436] [2020-10-28 14:15:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:15:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:34,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:15:34,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-28 14:15:34,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:15:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:15:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:15:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:15:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:15:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:15:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:15:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:15:34,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:15:34,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:15:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 14:15:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:15:34,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:15:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:15:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:15:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:15:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:15:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:15:34,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634144436] [2020-10-28 14:15:34,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:15:34,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:15:34,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104714930] [2020-10-28 14:15:34,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:15:34,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:15:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:15:34,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:15:34,351 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:16:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:16:08,006 INFO L93 Difference]: Finished difference Result 5117 states and 9608 transitions. [2020-10-28 14:16:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:16:08,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 14:16:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:16:08,057 INFO L225 Difference]: With dead ends: 5117 [2020-10-28 14:16:08,130 INFO L226 Difference]: Without dead ends: 3272 [2020-10-28 14:16:08,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:16:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-10-28 14:16:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3201. [2020-10-28 14:16:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-10-28 14:16:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 5485 transitions. [2020-10-28 14:16:08,393 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 5485 transitions. Word has length 15 [2020-10-28 14:16:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:16:08,393 INFO L481 AbstractCegarLoop]: Abstraction has 3201 states and 5485 transitions. [2020-10-28 14:16:08,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:16:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 5485 transitions. [2020-10-28 14:16:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 14:16:08,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:16:08,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:16:08,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:16:08,403 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:16:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:16:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1133872623, now seen corresponding path program 1 times [2020-10-28 14:16:08,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:16:08,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399159609] [2020-10-28 14:16:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:16:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:08,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:09,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 14:16:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:16:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1201 [2020-10-28 14:16:09,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:09,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:16:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:16:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 14:16:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:16:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:16:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:09,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:09,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:09,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:16:09,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:16:09,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:09,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:16:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:16:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:16:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:09,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:16:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:10,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:10,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 14:16:10,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 14:16:10,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:10,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:16:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:16:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 14:16:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:16:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:16:10,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399159609] [2020-10-28 14:16:10,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:16:10,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:16:10,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917275214] [2020-10-28 14:16:10,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:16:10,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:16:10,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:16:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:16:10,233 INFO L87 Difference]: Start difference. First operand 3201 states and 5485 transitions. Second operand 7 states. [2020-10-28 14:16:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:16:53,550 INFO L93 Difference]: Finished difference Result 9562 states and 16482 transitions. [2020-10-28 14:16:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:16:53,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-28 14:16:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:16:53,592 INFO L225 Difference]: With dead ends: 9562 [2020-10-28 14:16:53,593 INFO L226 Difference]: Without dead ends: 6367 [2020-10-28 14:16:53,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:16:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2020-10-28 14:16:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6258. [2020-10-28 14:16:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6258 states. [2020-10-28 14:16:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 10368 transitions. [2020-10-28 14:16:53,851 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 10368 transitions. Word has length 87 [2020-10-28 14:16:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:16:53,852 INFO L481 AbstractCegarLoop]: Abstraction has 6258 states and 10368 transitions. [2020-10-28 14:16:53,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:16:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 10368 transitions. [2020-10-28 14:16:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 14:16:53,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:16:53,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:16:53,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:16:53,860 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:16:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:16:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash 37308862, now seen corresponding path program 1 times [2020-10-28 14:16:53,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:16:53,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894679932] [2020-10-28 14:16:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:16:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:55,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:16:55,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:16:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-28 14:16:55,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:55,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:16:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:16:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:16:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:16:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:55,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:16:55,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:16:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:55,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:16:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:16:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:16:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:16:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:16:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:16:55,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:16:55,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:16:55,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:16:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 14:16:55,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:16:55,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:16:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:16:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:16:55,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:16:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:16:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:16:55,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894679932] [2020-10-28 14:16:55,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:16:55,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:16:55,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039315762] [2020-10-28 14:16:55,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:16:55,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:16:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:16:55,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:16:55,610 INFO L87 Difference]: Start difference. First operand 6258 states and 10368 transitions. Second operand 7 states. [2020-10-28 14:17:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:17:53,513 INFO L93 Difference]: Finished difference Result 15743 states and 26256 transitions. [2020-10-28 14:17:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:17:53,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-28 14:17:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:17:53,576 INFO L225 Difference]: With dead ends: 15743 [2020-10-28 14:17:53,577 INFO L226 Difference]: Without dead ends: 9491 [2020-10-28 14:17:53,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:17:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2020-10-28 14:17:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9147. [2020-10-28 14:17:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9147 states. [2020-10-28 14:17:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 13542 transitions. [2020-10-28 14:17:53,920 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 13542 transitions. Word has length 90 [2020-10-28 14:17:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:17:53,922 INFO L481 AbstractCegarLoop]: Abstraction has 9147 states and 13542 transitions. [2020-10-28 14:17:53,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:17:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 13542 transitions. [2020-10-28 14:17:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 14:17:53,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:17:53,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:17:53,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:17:53,942 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:17:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:17:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2086192146, now seen corresponding path program 1 times [2020-10-28 14:17:53,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:17:53,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167075413] [2020-10-28 14:17:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:17:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-28 14:17:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:17:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 14:17:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:17:56,166 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:17:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:17:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:56,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:56,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:17:56,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:17:56,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:56,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:17:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:17:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:17:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:17:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:17:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:17:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:17:56,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:17:56,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 14:17:56,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:17:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 14:17:56,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:17:56,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:17:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:17:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:17:56,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-28 14:17:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:17:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:17:57,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167075413] [2020-10-28 14:17:57,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:17:57,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:17:57,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292534195] [2020-10-28 14:17:57,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:17:57,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:17:57,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:17:57,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:17:57,047 INFO L87 Difference]: Start difference. First operand 9147 states and 13542 transitions. Second operand 8 states. [2020-10-28 14:17:57,231 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66