/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:53:17,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:53:17,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:53:17,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:53:17,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:53:17,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:53:17,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:53:17,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:53:17,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:53:17,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:53:17,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:53:17,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:53:17,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:53:17,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:53:17,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:53:17,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:53:17,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:53:17,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:53:17,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:53:17,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:53:17,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:53:17,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:53:17,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:53:17,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:53:17,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:53:17,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:53:17,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:53:17,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:53:17,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:53:17,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:53:17,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:53:17,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:53:17,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:53:17,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:53:17,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:53:17,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:53:17,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:53:17,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:53:17,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:53:17,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:53:17,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:53:17,257 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 06:53:17,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:53:17,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:53:17,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:53:17,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:53:17,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:53:17,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:53:17,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:53:17,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:53:17,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:53:17,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:53:17,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:53:17,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:53:17,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:53:17,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:53:17,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:53:17,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:53:17,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:53:17,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:53:17,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:53:17,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:53:17,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:53:17,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:53:17,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:53:17,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:53:17,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:53:17,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:53:17,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:53:17,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:53:17,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:53:17,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:53:17,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:53:17,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:53:17,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:53:17,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:53:17,749 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:53:17,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-29 06:53:17,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65cbe6cfe/eec679676fa9468aad1203fce3ec9ea3/FLAG426e7d6ac [2020-10-29 06:53:18,875 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:53:18,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-29 06:53:18,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65cbe6cfe/eec679676fa9468aad1203fce3ec9ea3/FLAG426e7d6ac [2020-10-29 06:53:19,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65cbe6cfe/eec679676fa9468aad1203fce3ec9ea3 [2020-10-29 06:53:19,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:53:19,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:53:19,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:53:19,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:53:19,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:53:19,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:19" (1/1) ... [2020-10-29 06:53:19,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecd33ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:19, skipping insertion in model container [2020-10-29 06:53:19,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:19" (1/1) ... [2020-10-29 06:53:19,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:53:19,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:53:21,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:53:21,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:53:21,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:53:21,879 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:53:21,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21 WrapperNode [2020-10-29 06:53:21,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:53:21,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:53:21,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:53:21,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:53:21,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:21,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:21,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:21,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:22,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:22,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:22,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (1/1) ... [2020-10-29 06:53:22,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:53:22,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:53:22,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:53:22,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:53:22,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (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 06:53:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:53:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:53:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:53:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:53:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:53:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:53:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:53:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:53:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:53:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:53:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:53:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:53:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:53:27,920 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:53:27,921 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:53:27,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:27 BoogieIcfgContainer [2020-10-29 06:53:27,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:53:27,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:53:27,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:53:27,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:53:27,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:53:19" (1/3) ... [2020-10-29 06:53:27,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:27, skipping insertion in model container [2020-10-29 06:53:27,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:21" (2/3) ... [2020-10-29 06:53:27,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:27, skipping insertion in model container [2020-10-29 06:53:27,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:27" (3/3) ... [2020-10-29 06:53:27,933 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2020-10-29 06:53:27,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:53:27,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:53:27,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:53:28,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:53:28,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:53:28,002 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:53:28,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:53:28,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:53:28,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:53:28,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:53:28,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:53:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:53:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 06:53:28,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:28,098 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] [2020-10-29 06:53:28,098 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2041990092, now seen corresponding path program 1 times [2020-10-29 06:53:28,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:28,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332033569] [2020-10-29 06:53:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:28,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:28,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:28,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 06:53:28,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:28,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-29 06:53:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:28,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:53:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:53:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:29,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:29,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:29,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:29,163 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 06:53:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332033569] [2020-10-29 06:53:29,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:29,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:53:29,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403938664] [2020-10-29 06:53:29,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:53:29,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:29,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:53:29,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:29,192 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 06:53:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:41,552 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:53:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:41,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-29 06:53:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:41,589 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:53:41,590 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:53:41,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 06:53:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:53:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:53:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:53:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2870 transitions. [2020-10-29 06:53:41,829 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2870 transitions. Word has length 54 [2020-10-29 06:53:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:41,831 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2870 transitions. [2020-10-29 06:53:41,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2870 transitions. [2020-10-29 06:53:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 06:53:41,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:41,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:53:41,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:53:41,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:41,855 INFO L82 PathProgramCache]: Analyzing trace with hash 604794510, now seen corresponding path program 1 times [2020-10-29 06:53:41,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:41,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938683711] [2020-10-29 06:53:41,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 06:53:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-29 06:53:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:43,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:53:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:43,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:53:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 06:53:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:43,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:53:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:43,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938683711] [2020-10-29 06:53:43,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:43,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:53:43,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387078627] [2020-10-29 06:53:43,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:53:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:43,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:53:43,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:53:43,656 INFO L87 Difference]: Start difference. First operand 1554 states and 2870 transitions. Second operand 8 states. [2020-10-29 06:54:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:02,888 INFO L93 Difference]: Finished difference Result 6291 states and 11748 transitions. [2020-10-29 06:54:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:02,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-29 06:54:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:02,922 INFO L225 Difference]: With dead ends: 6291 [2020-10-29 06:54:02,922 INFO L226 Difference]: Without dead ends: 4743 [2020-10-29 06:54:02,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:54:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2020-10-29 06:54:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4720. [2020-10-29 06:54:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2020-10-29 06:54:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 7692 transitions. [2020-10-29 06:54:03,161 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 7692 transitions. Word has length 131 [2020-10-29 06:54:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:03,164 INFO L481 AbstractCegarLoop]: Abstraction has 4720 states and 7692 transitions. [2020-10-29 06:54:03,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:54:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 7692 transitions. [2020-10-29 06:54:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 06:54:03,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:03,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:03,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:54:03,170 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash 986645834, now seen corresponding path program 1 times [2020-10-29 06:54:03,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:03,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412160591] [2020-10-29 06:54:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:04,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:54:04,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-29 06:54:04,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:04,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:54:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 06:54:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:05,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:54:05,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:05,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:05,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 06:54:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:54:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:54:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:54:05,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412160591] [2020-10-29 06:54:05,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:05,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:54:05,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979976393] [2020-10-29 06:54:05,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:05,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:05,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:05,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:05,325 INFO L87 Difference]: Start difference. First operand 4720 states and 7692 transitions. Second operand 6 states. [2020-10-29 06:54:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:24,439 INFO L93 Difference]: Finished difference Result 18876 states and 32115 transitions. [2020-10-29 06:54:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:54:24,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-29 06:54:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:24,540 INFO L225 Difference]: With dead ends: 18876 [2020-10-29 06:54:24,540 INFO L226 Difference]: Without dead ends: 14162 [2020-10-29 06:54:24,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 06:54:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14162 states. [2020-10-29 06:54:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14162 to 14135. [2020-10-29 06:54:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14135 states. [2020-10-29 06:54:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14135 states to 14135 states and 22534 transitions. [2020-10-29 06:54:25,094 INFO L78 Accepts]: Start accepts. Automaton has 14135 states and 22534 transitions. Word has length 133 [2020-10-29 06:54:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:25,095 INFO L481 AbstractCegarLoop]: Abstraction has 14135 states and 22534 transitions. [2020-10-29 06:54:25,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 14135 states and 22534 transitions. [2020-10-29 06:54:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 06:54:25,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:25,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:25,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:54:25,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash 290752894, now seen corresponding path program 1 times [2020-10-29 06:54:25,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:25,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942480682] [2020-10-29 06:54:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 06:54:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-29 06:54:25,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 06:54:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:54:26,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:54:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:54:26,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942480682] [2020-10-29 06:54:26,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:54:26,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:54:26,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362336871] [2020-10-29 06:54:26,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:26,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:26,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:26,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:26,314 INFO L87 Difference]: Start difference. First operand 14135 states and 22534 transitions. Second operand 7 states. [2020-10-29 06:54:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:42,920 INFO L93 Difference]: Finished difference Result 42788 states and 71901 transitions. [2020-10-29 06:54:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:54:42,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-29 06:54:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:43,110 INFO L225 Difference]: With dead ends: 42788 [2020-10-29 06:54:43,110 INFO L226 Difference]: Without dead ends: 28659 [2020-10-29 06:54:43,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28659 states. [2020-10-29 06:54:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28659 to 25405. [2020-10-29 06:54:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25405 states. [2020-10-29 06:54:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25405 states to 25405 states and 39715 transitions. [2020-10-29 06:54:44,240 INFO L78 Accepts]: Start accepts. Automaton has 25405 states and 39715 transitions. Word has length 139 [2020-10-29 06:54:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:44,242 INFO L481 AbstractCegarLoop]: Abstraction has 25405 states and 39715 transitions. [2020-10-29 06:54:44,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 25405 states and 39715 transitions. [2020-10-29 06:54:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 06:54:44,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:44,256 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:54:44,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:54:44,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash 887304886, now seen corresponding path program 1 times [2020-10-29 06:54:44,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:44,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607495341] [2020-10-29 06:54:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:54:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 06:54:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:54:49,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:49,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:49,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:49,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:54:49,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:49,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 06:54:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 06:54:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:50,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:54:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:54:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:54:50,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607495341] [2020-10-29 06:54:50,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:50,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:54:50,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448809096] [2020-10-29 06:54:50,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:54:50,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:50,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:54:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:54:50,625 INFO L87 Difference]: Start difference. First operand 25405 states and 39715 transitions. Second operand 10 states. [2020-10-29 06:55:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:17,178 INFO L93 Difference]: Finished difference Result 59977 states and 106703 transitions. [2020-10-29 06:55:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:55:17,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 247 [2020-10-29 06:55:17,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:17,402 INFO L225 Difference]: With dead ends: 59977 [2020-10-29 06:55:17,403 INFO L226 Difference]: Without dead ends: 34578 [2020-10-29 06:55:17,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-10-29 06:55:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34578 states. [2020-10-29 06:55:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34578 to 34046. [2020-10-29 06:55:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34046 states. [2020-10-29 06:55:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34046 states to 34046 states and 55397 transitions. [2020-10-29 06:55:19,063 INFO L78 Accepts]: Start accepts. Automaton has 34046 states and 55397 transitions. Word has length 247 [2020-10-29 06:55:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:19,063 INFO L481 AbstractCegarLoop]: Abstraction has 34046 states and 55397 transitions. [2020-10-29 06:55:19,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:55:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 34046 states and 55397 transitions. [2020-10-29 06:55:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 06:55:19,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:19,079 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:19,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:55:19,080 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash -101016934, now seen corresponding path program 1 times [2020-10-29 06:55:19,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:19,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673008488] [2020-10-29 06:55:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:24,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:24,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:55:24,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:55:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:24,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:24,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:24,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:24,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:24,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:24,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:55:24,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:24,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:55:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:24,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:24,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:55:24,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:24,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 06:55:24,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:24,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:55:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:55:24,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673008488] [2020-10-29 06:55:24,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:24,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:55:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149312792] [2020-10-29 06:55:24,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:55:24,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:55:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:55:24,960 INFO L87 Difference]: Start difference. First operand 34046 states and 55397 transitions. Second operand 5 states. [2020-10-29 06:55:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:39,721 INFO L93 Difference]: Finished difference Result 79022 states and 130919 transitions. [2020-10-29 06:55:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:55:39,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-29 06:55:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:39,933 INFO L225 Difference]: With dead ends: 79022 [2020-10-29 06:55:39,934 INFO L226 Difference]: Without dead ends: 44982 [2020-10-29 06:55:40,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 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 06:55:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44982 states. [2020-10-29 06:55:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44982 to 44158. [2020-10-29 06:55:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44158 states. [2020-10-29 06:55:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44158 states to 44158 states and 65467 transitions. [2020-10-29 06:55:41,451 INFO L78 Accepts]: Start accepts. Automaton has 44158 states and 65467 transitions. Word has length 265 [2020-10-29 06:55:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:41,451 INFO L481 AbstractCegarLoop]: Abstraction has 44158 states and 65467 transitions. [2020-10-29 06:55:41,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:55:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 44158 states and 65467 transitions. [2020-10-29 06:55:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 06:55:41,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:41,484 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:41,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:55:41,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1640483158, now seen corresponding path program 1 times [2020-10-29 06:55:41,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:41,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819718205] [2020-10-29 06:55:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:41,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 06:55:46,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:55:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 06:55:46,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:55:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-10-29 06:55:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-29 06:55:47,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:55:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:55:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 06:55:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-29 06:55:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 06:55:48,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819718205] [2020-10-29 06:55:48,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:48,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:55:48,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105994949] [2020-10-29 06:55:48,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:55:48,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:55:48,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:55:48,434 INFO L87 Difference]: Start difference. First operand 44158 states and 65467 transitions. Second operand 8 states. [2020-10-29 06:56:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:09,203 INFO L93 Difference]: Finished difference Result 105732 states and 161948 transitions. [2020-10-29 06:56:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:56:09,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 395 [2020-10-29 06:56:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:09,528 INFO L225 Difference]: With dead ends: 105732 [2020-10-29 06:56:09,528 INFO L226 Difference]: Without dead ends: 61580 [2020-10-29 06:56:09,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:56:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61580 states. [2020-10-29 06:56:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61580 to 61023. [2020-10-29 06:56:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61023 states. [2020-10-29 06:56:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61023 states to 61023 states and 87729 transitions. [2020-10-29 06:56:12,160 INFO L78 Accepts]: Start accepts. Automaton has 61023 states and 87729 transitions. Word has length 395 [2020-10-29 06:56:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:12,160 INFO L481 AbstractCegarLoop]: Abstraction has 61023 states and 87729 transitions. [2020-10-29 06:56:12,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:56:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 61023 states and 87729 transitions. [2020-10-29 06:56:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-29 06:56:12,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:12,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:12,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:56:12,196 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:12,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:12,197 INFO L82 PathProgramCache]: Analyzing trace with hash 940384584, now seen corresponding path program 1 times [2020-10-29 06:56:12,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:12,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588331123] [2020-10-29 06:56:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:17,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:17,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-29 06:56:17,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:56:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 06:56:17,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:17,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-29 06:56:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 06:56:17,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:17,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:17,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:17,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:56:17,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:56:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:17,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:17,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 06:56:17,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 06:56:17,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:17,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:56:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 06:56:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:18,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 06:56:18,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-29 06:56:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:18,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-29 06:56:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 06:56:18,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588331123] [2020-10-29 06:56:18,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:18,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:18,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948786184] [2020-10-29 06:56:18,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:18,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:18,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:18,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:18,806 INFO L87 Difference]: Start difference. First operand 61023 states and 87729 transitions. Second operand 7 states. [2020-10-29 06:56:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:43,846 INFO L93 Difference]: Finished difference Result 137400 states and 208770 transitions. [2020-10-29 06:56:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:56:43,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-29 06:56:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:44,247 INFO L225 Difference]: With dead ends: 137400 [2020-10-29 06:56:44,247 INFO L226 Difference]: Without dead ends: 92665 [2020-10-29 06:56:44,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:56:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92665 states. [2020-10-29 06:56:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92665 to 91485. [2020-10-29 06:56:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91485 states. [2020-10-29 06:56:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91485 states to 91485 states and 125867 transitions. [2020-10-29 06:56:47,777 INFO L78 Accepts]: Start accepts. Automaton has 91485 states and 125867 transitions. Word has length 446 [2020-10-29 06:56:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:47,777 INFO L481 AbstractCegarLoop]: Abstraction has 91485 states and 125867 transitions. [2020-10-29 06:56:47,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 91485 states and 125867 transitions. [2020-10-29 06:56:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-29 06:56:47,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:47,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:47,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:56:47,815 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash -309597676, now seen corresponding path program 1 times [2020-10-29 06:56:47,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:47,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422226197] [2020-10-29 06:56:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...